Avast Mobile Security - FAQs

Avast Mobile Security is a security app for Android which secures mobile devices against unwanted phishing, malware, and spyware, as well as malicious viruses such as trojans. In addition, the embedded Anti-Theft feature allows you to locate and track your lost or stolen device on a map with our web-based mobile tracking that uses GPS and other triangulation methods.

This article answers common questions related to the features, settings, and general use of Avast Mobile Security for Android.

Download and Installation

What are the system requirements for Avast Mobile Security?

You can install and run the latest version of Avast Mobile Security on any device capable of running operating systems Google Android 4.1 (Jelly Bean, API 16) or higher.

Avast Mobile Security supports both Android phones and tablets. The app is compatible with all ARM Android devices. However, each vendor or manufacturer makes slight changes in their devices, so some features may behave unexpectedly or, in rare cases, not work. Please note that Avast cannot cover all vendor customizations to the OS. However we gladly accept feedback if you experience any compatibility issue on your Android device.

If you are using a custom ROM the app may not work as expected. Please report any feedback via our support pages.

Avast Mobile Security is:
  • Not supported on devices running Google Android 4.0.4 (Ice Cream Sandwich, API 15) or lower. However if you are using an older version of Avast Mobile Security on those systems you can still receive updates to the virus database.
  • Not supported and cannot be installed or run on Symbian, iOS, Microsoft Windows Phone/Mobile, Bada, WebOS, or any mobile operating system other than Android. This app does not work on iPhone or iPad devices.

How can I download and install Avast Mobile Security?

Avast Mobile Security for Android devices is available for download from the Google Play Store.

  1. Open the Google Play Store from the apps screen on your Android device and search for Avast Mobile Security.
  2. Open the Avast Mobile Security - Antivirus & AppLock page from the search results.
  3. Tap Install, and if asked for permissions, select Accept.
  4. Once the installation is complete, tap Open to start using the app.
  5. Select Continue to confirm that you have read and accept the terms of the AVAST End User License Agreement and Privacy Policy.
  6. On the next screen tap Continue to set up the protection.
These steps can differ slightly depending on your device model, operating system version and its vendor customizations. For more information please read the following article:

If you are experiencing issues with your current installation of Avast Mobile Security we recommend removing the application data and cache before re-installing.

Go to SettingsAppsAvast Mobile Security on your device, tap Clear data, then Clear cache, and finally uninstall. Then you can install as usual.

How can I uninstall Avast Mobile Security?

Before you start uninstalling Avast Mobile Security, ensure that you have deactivated the Device Administrators permission granted for the app in your Android Settings. Go to SettingsSecurityDevice Administrators and untick Avast Mobile Security. Otherwise, you will not be able to complete the uninstallation process. Then follow these steps:

  1. Open Settings from the main screen of your Android device.
  2. Select Apps, then Avast Mobile Security.
  3. In the Storage section, tap Clear data and Clear cache.
  4. Then select Uninstall and tap OK to confirm.

Avast Mobile Security is no longer installed on your device.

These steps can differ slightly depending on your device mode, Android version and vendor customizations.

For more information read the following article:

Main options

What is the Scan option?

The Scan option enables you to scan all applications installed on your device and informs you about security risks caused by changes in default Android settings.

The virus definitions used by the scan are updated automatically. To manually update them, go to SettingsUpdatesCheck for update.

Avast Mobile Security automatically scans newly installed applications the first time they are run. If the app detects malware on your device, the system offers to uninstall the application or to delete the file. If the app incorrectly identifies an application or file as malware, report the false-positive detection directly to Avast Threat Labs.

To schedule automatic scans, go to SettingsProtectionScheduled scan.

What is the Boost RAM option?

Tap Boost RAM to kill any apps running in the background of your device. This action prevents your apps from slowing down your device and draining your battery. When complete, the amount of freed space and number of killed apps is displayed.

What is the Clean Junk option?

When you tap Clean Junk, Avast Mobile Security analyzes the space on your device and displays the amount of storage space that is being used by junk files. You can then free up space on your device by tapping Safe clean which removes unnecessary files from your device.

This feature cleans three types of files:

  • Temporary app files: temporary data which can be deleted with no impact on app functionality.
  • Advertisement cache: data from folders where ad systems save their resources.
  • Used installation files: APK files used by sources other than Google Play.

To free up further space, install the Avast Cleanup app directly from the Safe clean results screen.

What is the Scan Wi-Fi option?

Scan Wi-Fi enables you to scan your network for problems with the router, encryption, Wi-Fi, and connection.

Features

What is App Locking?

App Locking is a feature of Avast Mobile Security which protects your sensitive apps with a PIN, pattern or fingerprint. The PIN can be created or changed in SettingsPIN & patternChange PIN. App Locking requires you to enable the Usage Access permission in the security settings of your device (on Android 5 and higher). If your device is configured to unlock the screen by using a fingerprint, you can also use this option for App Locking. To enable this feature, follow these steps:

  1. Tap the menu icon (three lines) in the top left corner of the Avast Mobile Security screen.
  2. Select App Locking.
  3. Tap Set up now on the panel at the bottom of the screen.
  4. Perform all needed actions visible on the screen by tapping them one by one and following the on-screen instructions. These steps can differ depending on your Android system version and device model.
  5. Once all actions are performed and labeled with a green confirmation icon, click the Activate App Locking button.
  6. Tap the OFF slider next to an app you want to protect with App Locking so that it changes to ON.

App Locking is now configured and ready to use. To disable it, tap the ON slider in the main App Locking screen above the list of apps so that it changes to OFF.

If you want to specify when App Locking locks apps, go to SettingsApp locking timeout.

What is Anti-Theft?

Anti-Theft is designed to protect your private mobile data and help you recover your device in the case of loss or theft. You can configure Anti-Theft to automatically perform certain actions, for example, to sound an alarm if an untrusted SIM card is detected. When you upgrade to the paid version of Avast Mobile Security, you can also use three additional options that help you protect and locate your lost or stolen device:

  • Capture a photo of the thief when an incorrect PIN is entered.
  • Lock your device when the SIM card is changed.
  • Secretly record the phone's surroundings at any time.

For more information about Anti-Theft refer to the following article:

What is Photo Vault?

Photo Vault allows you to protect access to your photos with a PIN code. Photos that are moved to the Photo Vault are encrypted and hidden. To add a photo to the Photo Vault, tap the plus icon and select one of the following options:

  • Take new photo: allows you to take photos and directly add them to the Photo Vault.
    1. Take a photo with your camera.
    2. Tap the tick button to place the photo in the Vault.
  • Import from gallery: allows you to select photos from your existing gallery. If you run Photo Vault for the first time, follow these steps:
    1. Choose the Google Account for PIN reset.
    2. Create and confirm a PIN code.
    3. Tick the photo(s) that you want to protect.
    4. Tap Hide now.

If you want to remove photos from the Photo Vault, tick the photo(s) and tap one of the following icons that appear at the top of the screen:

  • The export icon: exports a photo back to the original location and makes it visible to others.
  • The trash icon: removes a photo from the Vault and from the original location. This step cannot be undone.

If you forget your PIN, tap the menu icon (three dots icon) on the lock screen (from within the Photo Vault feature) and tap Reset PIN to reset your PIN using your Google Account credentials.

In the free version of Avast Mobile Security, you can protect up to 50 photos. To secure an unlimited number of photos, upgrade to the paid version of Avast Mobile Security.

What is Wi-Fi Security?

Wi-Fi Security enables you to scan your network for problems with the router, encryption, Wi-Fi, and connection. When this action is complete, the app advises if the network is safe and notifies you of potential threats. Wi-Fi Security describes the issue in detail and offers a solution. You can connect to a network from Wi-Fi Security and run a scan, or scan a network that your device is already connected to.

What is Wi-Fi Speed?

The Wi-Fi Speed option checks the download and upload speed of the Wi-Fi network that you are connected to.

What is Power Save?

Power Save allows you to adjust the range of settings that may reduce your device's battery consumption. Tap Activate Power Save to enable Power Save. The feature offers a variety of settings, such as the Wi-Fi, synchronization, Bluetooth, and screen settings that drain your battery the most. You can select your preferred battery saving settings or use the default configuration.

If the Avast Battery Saver app is also installed on your device, power saving is managed by this app.

What is Call Blocker?

Call Blocker enables you to filter voice calls based on blacklisted numbers that can include all unknown numbers, hidden numbers, manually added numbers, and numbers from your contact list. When a call is blocked, the caller is automatically redirected to voice mail.

Blocked calls appear in the log that is accessible from the main screen of Call Blocker.

What is App Permissions?

App Permissions is designed to give you insight into the level of permission required by each of your installed apps. App permissions determine an app's capabilities in terms of what the app can do and which information it can access on your device. For example, an app may require permission to see your device contacts or location.

When you tap App Permissions, a list of all apps installed on your device appears. Tap any app to see the following information about the app:

  • The version number of the app and amount of space it occupies on your device.
  • Details of the permissions required by the app.
  • Details of any known ad networks the app is connected with.

You can also uninstall apps from your device using this feature.

What is Firewall?

Firewall allows you to manage internet access for your installed apps. Tap Firewall to see a list of apps installed on your device. Tap any app then select one of the following options:

  • Block all: the app is completely blocked, regardless of the type of connection.
  • Block mobile data: the app only works if the device is connected to the internet via Wi-Fi.

To specify if Firewall should Take highest priority, go to Settings. This setting is useful if this component does not work on your device when mobile data limit is enabled.

Firewall in Avast Mobile Security only works on rooted devices.

What is SMS Shield?

SMS Shield is an additional security layer that warns you when you receive an SMS message that contains a malicious URL. Due to Android system restrictions, a message itself cannot be blocked or modified, so showing an alert is the only way to protect you in this case. Additionally, SMS Shield warns you when you receive an SMS message from a phone number which is a known malware distributor or spammer (by looking up the sender in our database of known malicious phone numbers which is based on the experience of other users). However, if a phone number or link is wrongly considered a threat, please contact our support team and describe your issue.

SMS Shield scans only links in SMS messages received. It does not check other elements, such as photos, audio or video files, and it does not protect messages in other apps and protocols, such as WhatsApp, Facebook Messenger, Skype, WeChat, etc.

To turn on SMS Shield, go to MenuSettingsProtection then tap the OFF slider next to SMS Shield so that it changes to ON.

We may share anonymized data about URL distribution or messaging campaigns with third parties. If you do not want to share your data you can disable data sharing at any time in SettingsData settingsData sharing.

What is Data Usage?

Data Usage monitors your data consumption and helps you avoid additional charges by notifying you when you approach the limit. To manage Data Usage, go to MenuSettingsData Usage and specify or check the following:

  • Data package size: set your data package size.
  • Day of month to reset: select the day when your data will be reset every month.
  • Recommended daily limit: this is automatically calculated from the cycle limit.

Additionally, Data Usage can be set to display an alert each time you exceed the daily limit or reached the cycle limit and to show you statistics about the current data usage cycle. To manage Data Usage alerts, go to MenuSettingsNotifications & alerts and tap Data Usage alerts.

What is the Avast Account?

The Avast Account is a portal where you can manage all Avast licenses that are registered to your email address. These licenses can be for any Avast product across all of your devices.

For more information, refer to the following article:

Premium Features

What are the benefits of upgrading to Avast Mobile Security Pro?

Avast Mobile Security is available as both a free and paid version. When you upgrade to Avast Mobile Security Pro you can take advantage of the following premium features and enhancements on up to 5 Android devices:

  • Remove ads: eliminate the third party advertisements from your Mobile Security experience.
  • App Locking: protect access to your apps with a PIN.
  • Anti-Theft: use three additional options that help you protect and locate your lost or stolen device.
    • Capture a photo of the thief when an incorrect PIN is entered.
    • Lock your device when the SIM card is changed.
    • Secretly record the phone's surroundings at any time.
  • Avast Direct Support: receive fast (or prioritized) responses to your support inquiries.

What features are included in the other paid versions of Avast Mobile Security?

In addition to Avast Mobile Security Pro, we also offer the following paid products:

How do I purchase and activate a paid version of Avast Mobile Security?

The paid versions of Avast Mobile Security are available as an upgrade from the free version of Avast Mobile Security. To purchase and activate a paid version of Avast Mobile Security, follow these steps:

  1. Tap the Avast Mobile Security icon on the main screen of your device to open the app.
  2. Tap Upgrade.
  3. Select a subscription plan.
  4. Tap Subscribe, then confirm your payment details on the next screen.

When the transaction completes, your paid version of Avast Mobile Security is automatically activated on your device.

For detailed instructions, refer to the following article:

Is my license for the paid version of Avast Mobile Security also valid for other paid Avast apps?

If you purchase Avast Mobile Security Pro, your license is only valid for this app. Avast Mobile Security Pro Plus, Ultimate, and Ultimate Multi also include licenses for other paid Avast apps.

How can I activate my Avast Mobile Security license on other devices?

Your paid Avast Mobile Security license is automatically activated on your primary Android device during your subscription purchase. To activate the license on other Android devices, follow these steps:

Find your activation code

  1. On your primary Android device, ensure you are logged into Google Play Store using your Google account linked to the Pro subscription purchase.
  2. Open Avast Mobile Security, then go to MenuSettingsSubscription.
  3. Your Activation code appears under your Pro subscription details on the top of the screen.

Activate Avast Mobile Security Pro for Android

  1. On another Android device, download and install the latest version of Avast Mobile Security from the Google Play Store.
  2. Open Avast Mobile Security and tap Update now during the tutorial. If you skipped the tutorial, go to MenuRemove ads.
  3. Tap the Menu icon (three dots) in the top-right corner and select Enter voucher code.
  4. Enter your activation code into the text box and tap Confirm. Refer to the instructions above, to find your activation code.
If you previously activated Avast Mobile Security Pro using a voucher or activation code linked to a different valid subscription, first go to MenuSettingsSubscription, save your previous Activation code so you can transfer it to another device, and tap Unlink. Then follow the activation steps above.

Find your activation code

  1. On your primary Android device, ensure you are logged into Google Play Store using your Google account linked to the Pro Plus subscription purchase.
  2. Open Avast Mobile Security, then go to MenuSettingsSubscription.
  3. Your Activation code appears under your Pro Plus subscription details on the top of the screen.

Activate Avast Mobile Security Pro for Android

  1. On another Android device, download and install the latest version of Avast Mobile Security from the Google Play Store.
  2. Open Avast Mobile Security and tap Update now during the tutorial. If you skipped the tutorial, go to MenuRemove ads.
  3. Tap the Menu icon (three dots) in the top-right corner and select Enter voucher code.
  4. Enter your activation code into the text box and tap Confirm. Refer to the instructions above, to find your activation code.
If you previously activated Avast Mobile Security Pro using a voucher or activation code linked to a different valid subscription, first go to MenuSettingsSubscription, save your previous Activation code so you can transfer it to another device, and tap Unlink. Then follow the activation steps above.

Activate Avast Cleanup Pro for Android

  1. On any Android device, download and install the latest version of Avast Cleanup from the Google Play Store.
  2. Open Avast Cleanup and tap Update now during the tutorial. If you skipped the tutorial, go to MenuRemove ads.
  3. Tap the Menu icon (three dots) in the top-right corner and select Enter voucher code.
  4. Enter your activation code into the text box and tap Confirm. Refer to the instructions above, to find your activation code.
If you previously activated Avast Cleanup Pro using a voucher or activation code linked to a different valid subscription, first go to MenuSettingsSubscription, save your previous Activation code so you can transfer it to another device, and tap Unlink. Then follow the activation steps above.

Find your activation code

  1. On your primary Android device, ensure you are logged into Google Play Store using your Google account linked to the Ultimate subscription purchase.
  2. Open Avast Mobile Security, then go to MenuSettingsSubscription.
  3. Your Activation code appears under your Ultimate subscription details on the top of the screen.

Activate Avast Mobile Security Pro for Android

  1. On another Android device, download and install the latest version of Avast Mobile Security from the Google Play Store.
  2. Open Avast Mobile Security and tap Update now during the tutorial. If you skipped the tutorial, go to MenuRemove ads.
  3. Tap the Menu icon (three dots) in the top-right corner and select Enter voucher code.
  4. Enter your activation code into the text box and tap Confirm. Refer to the instructions above, to find your activation code.
If you previously activated Avast Mobile Security Pro using a voucher or activation code linked to a different valid subscription, first go to MenuSettingsSubscription, save your previous Activation code so you can transfer it to another device, and tap Unlink. Then follow the activation steps above.

Activate Avast Cleanup Pro for Android

  1. On any Android device, download and install the latest version of Avast Cleanup from the Google Play Store.
  2. Open Avast Cleanup and tap Update now during the tutorial. If you skipped the tutorial, go to MenuRemove ads.
  3. Tap the Menu icon (three dots) in the top-right corner and select Enter voucher code.
  4. Enter your activation code into the text box and tap Confirm. Refer to the instructions above, to find your activation code.
If you previously activated Avast Cleanup Pro using a voucher or activation code linked to a different valid subscription, first go to MenuSettingsSubscription, save your previous Activation code so you can transfer it to another device, and tap Unlink. Then follow the activation steps above.

Activate Avast SecureLine VPN for Android

  1. On any Android device, download and install the latest version of Avast SecureLine VPN from the Google Play Store.
  2. Open Avast SecureLine VPN and tap Already purchased? during the tutorial. If you skipped the tutorial, go to Settings (the gear icon) ▸ SubscriptionAlready purchased.
  3. Select Use voucher.
  4. Enter your activation code into the text box and tap Continue. Refer to the instructions above, to find your activation code.
If you previously activated Avast SecureLine VPN using a voucher or activation code linked to a different valid subscription, first go to Settings (the gear icon) ▸ Subscription, save your previous Activation code so you can transfer it to another device, and tap Unlink. Then follow the activation steps above.

Activate Avast SecureLine VPN for iOS

  1. On any iOS device, download and install the latest version of Avast SecureLine VPN from the App Store.
  2. Open Avast SecureLine VPN and tap Already purchased? during the tutorial. If you skipped the tutorial, go to Settings (the gear icon) ▸ SubscriptionAlready purchased.
  3. Select Enter Avast subscription code.
  4. Enter your activation code into the text box and tap OK. Refer to the instructions above, to find your activation code.
If you previously activated Avast SecureLine VPN using a voucher or activation code linked to a different valid subscription, first go to Settings (the gear icon) ▸ Subscription, save your previous Activation code so you can transfer it to another device, and tap Unlink. Then follow the activation steps above.

Find your activation code

  1. On your primary Android device, ensure you are logged into Google Play Store using your Google account linked to the Ultimate Multi subscription purchase.
  2. Open Avast Mobile Security, then go to MenuSettingsSubscription.
  3. Your Activation code appears under your Ultimate Multi subscription details on the top of the screen.

Activate Avast Mobile Security Pro for Android

  1. On another Android device, download and install the latest version of Avast Mobile Security from the Google Play Store.
  2. Open Avast Mobile Security and tap Update now during the tutorial. If you skipped the tutorial, go to MenuRemove ads.
  3. Tap the Menu icon (three dots) in the top-right corner and select Enter voucher code.
  4. Enter your activation code into the text box and tap Confirm. Refer to the instructions above, to find your activation code.
If you previously activated Avast Mobile Security Pro using a voucher or activation code linked to a different valid subscription, first go to MenuSettingsSubscription, save your previous Activation code so you can transfer it to another device, and tap Unlink. Then follow the activation steps above.

Activate Avast Cleanup Pro for Android

  1. On any Android device, download and install the latest version of Avast Cleanup from the Google Play Store.
  2. Open Avast Cleanup and tap Update now during the tutorial. If you skipped the tutorial, go to MenuRemove ads.
  3. Tap the Menu icon (three dots) in the top-right corner and select Enter voucher code.
  4. Enter your activation code into the text box and tap Confirm. Refer to the instructions above, to find your activation code.
If you previously activated Avast Cleanup Pro using a voucher or activation code linked to a different valid subscription, first go to MenuSettingsSubscription, save your previous Activation code so you can transfer it to another device, and tap Unlink. Then follow the activation steps above.

Activate Avast SecureLine VPN for Android

  1. On any Android device, download and install the latest version of Avast SecureLine VPN from the Google Play Store.
  2. Open Avast SecureLine VPN and tap Already purchased? during the tutorial. If you skipped the tutorial, go to Settings (the gear icon) ▸ SubscriptionAlready purchased.
  3. Select Use voucher.
  4. Enter your activation code into the text box and tap Continue. Refer to the instructions above, to find your activation code.
If you previously activated Avast SecureLine VPN using a voucher or activation code linked to a different valid subscription, first go to Settings (the gear icon) ▸ Subscription, save your previous Activation code so you can transfer it to another device, and tap Unlink. Then follow the activation steps above.

Activate Avast SecureLine VPN for iOS

  1. On any iOS device, download and install the latest version of Avast SecureLine VPN from the App Store.
  2. Open Avast SecureLine VPN and tap Already purchased? during the tutorial. If you skipped the tutorial, go to Settings (the gear icon) ▸ SubscriptionAlready purchased.
  3. Select Enter Avast subscription code.
  4. Enter your activation code into the text box and tap OK. Refer to the instructions above, to find your activation code.
If you previously activated Avast SecureLine VPN using a voucher or activation code linked to a different valid subscription, first go to Settings (the gear icon) ▸ Subscription, save your previous Activation code so you can transfer it to another device, and tap Unlink. Then follow the activation steps above.

Activate Avast Premier for Windows

  1. On your Windows PC, download and install the latest version of Avast Premier from the Avast website.
  2. Open Avast Premier, then go to MenuMy licenses.
  3. Select Enter a valid activation code.
  4. Enter your activation code into the text box and click Continue. Refer to the instructions above, to find your activation code.

Activate Avast Cleanup Premium for Windows

  1. On your Windows PC, download and install the latest version of Cleanup Premium from the Avast website.
  2. Open Avast Cleanup Premium, then go to MenuMy licenses.
  3. Select Enter a valid activation code.
  4. Enter your activation code into the text box and click Continue. Refer to the instructions above, to find your activation code.

Activate Avast SecureLine VPN for Windows

  1. On your Windows PC, download and install the latest version of Avast SecureLine VPN from the Avast website.
  2. Open Avast SecureLine VPN, then go to MenuSettingsSubscription.
  3. Click Activate.
  4. Enter your activation code into the text box and click Activate SecureLine. Refer to the instructions above, to find your activation code.

Activate Avast Security Pro for Mac

  1. On your Mac, download and install the latest version of Avast Security from the Avast website.
  2. Open Avast Security, then via the Menu Bar go to Avast SecurityPreferences...Subscription.
  3. Click Insert activation code.
  4. Enter your activation code into the text box and click Activate. Refer to the instructions above, to find your activation code.

Activate Avast Cleanup Pro for Mac

  1. On your Mac, download and install the latest version of Avast Cleanup Pro from the Avast website.
  2. Open Avast Cleanup Pro, then via the Menu Bar go to Avast Cleanup ProPreferences...Subscription.
  3. Click Insert activation code.
  4. Enter your activation code into the text box and click Activate. Refer to the instructions above, to find your activation code.

Activate Avast SecureLine VPN for Mac

  1. On your Mac, download and install the latest version of Avast SecureLine VPN from the Avast website.
  2. Open Avast SecureLine VPN, then via the Menu Bar go to Avast SecureLine VPNPreferences...Subscription.
  3. Click Activate.
  4. Enter your activate code into the text box and click Activate SecureLine. Refer to the instructions above, to find your activation code.

How can I cancel my subscription for Avast Mobile Security Pro?

If you have a paid Avast Mobile Security Pro version on your mobile device, and you want to cancel automatic renewal of your subscription, you need to do it via the Google Play Store. For more information please read the following article:

Please note that uninstalling an app from your device does not cancel your subscription, and you will continue to be charged for the subscription until you cancel it.

What are the benefits of the free trial version?

The free trial allows you to use all premium features of the paid Avast Mobile Security Pro version for free. The trial is activated automatically when you install Avast Mobile Security for the first time. To support the ongoing development of the app, the trial version includes advertisements which do not interfere with app usage. Once the trial expires, the app automatically changes to the free version. To continue using the premium features, upgrade to the paid version of Avast Mobile Security.

VPN Feature

What is the VPN feature in Avast Mobile Security?

The VPN feature in Avast Mobile Security allows you to connect to the internet via secure Avast VPN servers using an encrypted tunnel to protect your online activity from eavesdropping. Avast Mobile Security VPN mainly offers:

  • Protection: when many people connect to the same public network, attackers can capture sensitive data, such as logins and passwords. The encrypted VPN connection provides efficient protection against these types of attacks.
  • Anonymization: with broadband connections, many people have fixed IP addresses which can be tracked when browsing sensitive sites. With a VPN connection, the browsing session is effectively anonymized - the IP address the remote server sees is the address of the VPN server, not the user.
  • Unrestricted access to the internet: when connected to a VPN server in another location, you gain access to the content you want, regardless of your location. This allows you to browse freely and without limits.

How can I add VPN to Avast Mobile Security?

Avast Mobile Security VPN is available for Android devices with an Ultimate or Ultimate Multi subscription.

Can I use my license for Avast SecureLine VPN to activate Avast Mobile Security VPN?

No. In this case you would continue to use Avast SecureLine VPN as a separate application. However, the activation code from an Ultimate or Ultimate Multi license can be used to activate either Avast Mobile Security VPN or Avast SecureLine VPN.

Settings

How do I change Notifications settings?

The Notifications & alerts section allows you to customize all notifications from Avast Mobile Security to keep you informed and ensure the highest protection level. Notifications and alerts are divided into several sections:

  • Realtime protection
    • Permanent notification: ensures complete protection by preventing Android from stopping Avast Mobile Security processes as Android may disable the apps running only in the background. It also ensures that App Locking works properly. You can easily adjust Permanent notification through MenuSettingsNotifications & alertsRealtime protectionPermanent notification.
    • Clipboard cleaner notification: notifies you if you have content copied to your clipboard and offers to clear it to prevent privacy leaks.
    • Sensitive app notification: notifies you when a sensitive app is installed and prompts you to protect access to the sensitive app by using App Locking.
    • App Shield notification: informs you if the app you are installing or updating is safe.
    • Alert me about SPAM calls: informs you when you receive a call from a number that is making a high volume of calls and offers to block this number using Call Blocker.
    • Scan complete popups: displays a popup to inform you immediately when a scan completes and results are ready to show.
    • Browser history cleaner: offers to clear your browser history to protect your privacy.
    • Low battery ping: prompts you to turn on Last Known Location so that you can locate your phone after the battery dies or even after your phone is turned off. Last Known Location is a setting within the Anti-Theft feature.
    • Sensitive content detected: detects when sensitive web content is displayed and recommends you use a VPN.
  • Performance
    • Charging screen: prompts you to turn on the charging screen when you plug in a charging cable.
    • Task killing notification: notifies you about apps running in the background and offers to stop them. This feature is disabled if the Avast Battery Saver app is installed on your device. It refers to the Boost RAM button on the Permanent notification bar.
    • Lower battery warning: informs you when your battery power reaches 30%.
    • Safe Clean: notifies you when more than 50 MB of unnecessary files were found on your device and recommends that you clean your device.
  • Wi-Fi networking
    • Unknown network dialog: offers to check security, test speed and secure connection when connecting to an unknown network.
    • Security scan: suggests scanning your network for security threats.
    • Speed test: offers to check your connection speed.
  • Data Usage alerts
    • Cycle usage reaches: informs you when data usage reaches a percentage level that you specify.
    • Cycles limit is reached: notifies you when your data cycle limit has been reached.
    • Daily limit is reached: notifies you when your daily data limit has been reached.
    • Always show data usage in notifications: always displays data usage in notifications.

Go to MenuSettingsNotifications & alerts to disable any of the notifications.

How can I disable or customize Permanent notification?

To prevent Android from killing the Avast Mobile Security app and inhibiting the app's ability to protect your device, we recommend enabling the Permanent notification so that it remains on at all times. If you disable the notification through MenuSettingsNotifications & alertsRealtime protectionPermanent notification, Avast Mobile Security may switch off automatically if, for example, too many energy-consuming apps are running on your device at once.

You can adjust the Permanent notification in the app settings. The following options are available:

  • Dark theme: displays a dark background with four widgets corresponding to different notifications.
  • Light theme: displays a light background with four widgets corresponding to different notifications.
  • Standard design: displays the current protection-state of your device (similar to the earlier version of the app).
  • Hidden (not recommended): turns the notification off completely which inhibits the app's ability to protect your device.

When an action is required, the relevant widget changes to red. Tap the widget for further instructions. For example, when the Scan Wi-Fi (Wi-Fi icon) widget is red, tap it to scan your Wi-Fi for potential security issues. To prevent a widget from changing to the alert-state, disable the corresponding notification in MenuSettingsNotifications & alerts.

How does the Charging screen optimize battery charging?

The Charging screen is a feature that displays charging progress and optimizes the performance of your device by stopping all background tasks. When this screen is active, you can check what time your device will finish charging and view the percentage of battery charge.

To enable this feature, go to MenuSettingsCharging screen then tap the OFF slider so that it changes to ON.

When you enable the Charging screen, you can specify the following settings:

  • Tap Activate any time charging begins or Activate when charging with the screen off according to your preferences. By default, the Charging screen appears each time you begin charging your device.
  • Tap Boost automatically when charging begins to allow Avast Mobile Security to stop any tasks that are running while your device is charging.
If Avast Battery Saver is installed on your device, you need to manage your charging screen settings in Avast Battery Saver. Otherwise, you can manage this feature in your Mobile Security settings.

How do I enable or disable the Charging screen?

To enable the Charging screen feature, follow these steps:

  1. Tap Menu in the top left corner of the Avast Mobile Security screen.
  2. Tap Settings.
  3. Tap Charging screen, then tap the OFF slider so that it changes to ON.

To disable the Charging screen follow the above steps and tap the ON slider so that it changes to OFF.

While the Charging screen is active, you can swipe right at the bottom of the screen to exit, or tap the gear icon to access Charging screen settings.

How can I customize shields in the Protection settings?

Protection components observe and scan the device to detect suspicious activity and protect against malware and viruses.

The following shields and components are included:

  • Scheduled scan: allows you to set a schedule for scanning. Select a day of the week and time for the app to scan your device automatically.
  • Ignored issues: shows a list of ignored issues, if you did not fix them after a scan.
  • App Install Shield: scans apps after installation.
  • Web Shield Lite: protects against phishing and other malicious websites.
  • Web Shield with Accessibility: scans each URL that loads and warns you when the browser loads a malware-infected URL. It requires accessibility permission to secure your device while browsing the web. Enable it in Android System Settings. This shield supports the native Android browser, Chrome, Opera, Firefox, Dolphin, and UC Browser.
  • Internal storage scanning: scans files that are stored in your internal storage. Please note that enabling this option may prolong the scanning process.
  • Low reputation apps: scans apps and compares them to Avast user ratings, and warns you about apps with a low reputation.
  • PUP detection: marks Potentially Unwanted Programs (PUP) as malware and handles them accordingly.
  • SMS Shield: alerts you when you receive a malicious URL via text message.

What is the PIN & pattern section?

The PIN & pattern section is linked to the App Locking feature. You can set a PIN code or a pattern to protect access to your apps with App Locking. If your device is configured to unlock the screen by using a fingerprint, you can also use this option for App Locking.

How can I change App Locking timeout settings?

In the App Locking timeout section, you can specify when apps are being locked with the App Locking feature. You can select the following options:

  • Immediately: locks an app immediately.
  • 10 seconds: locks an app after 10 seconds.
  • 30 seconds: locks an app after 30 seconds.
  • 1 minute: locks an app after 1 minute.
  • When screen turns off: locks an app when your device screen turns off.

The timeout countdown starts when you send an app to the background. When this or another app managed by App Locking is launched within the selected timeout, the countdown stops and restarts. Regardless of the timeout settings, App Locking always locks your apps when your screen turns off.

When one app is unlocked, all other apps managed by App Locking are also automatically unlocked so you can access all your apps within the timeout period.

How do I check virus definitions in the Updates section?

The Updates section displays the Virus definitions version and allows you to update virus definitions manually by tapping Check for update. You can also tick Update over Wi-Fi only to prevent Avast Mobile Security from updating when you are using mobile data to connect to the internet. We do not recommend keeping this option ticked at all times.

Where can I find the app's Activity Log?

The Activity Log is available in MenuSettingsActivity log.

The Activity Log allows you to see all activity by Avast Mobile Security. This mainly includes updates and scans. Clear the Activity Log by tapping the trash icon.

How can I control what data I share in Personal Privacy?

The Personal Privacy section helps us to understand your needs better and to improve our product based on the data that you agree to share with us. The following options are available:

  • Community IQ: collects security-related information to help us improve our threat database.
  • Help improve other Avast apps: sends usage data to Avast to help us improve our other apps.
  • Share usage data with third parties for analytics: allows app and device usage data to be shared with third parties for analytics.

What is Clipboard Cleaner?

Clipboard Cleaner is a feature that can easily clear your clipboard to prevent possible privacy leaks. If you are not interested in using Clipboard Cleaner, you can disable it through MenuSettingsNotifications & alertsRealtime protectionClipboard cleaner notification.

Troubleshooting

What if my paid Pro license does not work in Avast Mobile Security?

If Avast Mobile Security does not detect your valid Pro license and the app displays the License not found message when you try to restore your license, refer to the following article:

Why does Avast show ads in Avast Mobile Security?

Avast offers both a free and paid version Avast Mobile Security Pro. Avast Mobile Security Pro is ad-free and includes a range of additional premium features and benefits. To support the ongoing development of the app, the free version includes advertisements which do not interfere with app usage.

How can I disable ads in Avast Mobile Security?

Upgrading to the paid version of Avast Mobile Security removes ads. To upgrade, go to MenuSettingsRemove ads and select a subscription plan. After upgrading, ads for third-party products and services no longer appear in the app. Information about other Avast products will still appear.

What should I do if the Accessibility permission is disabled repeatedly?

To improve performance, some Android devices proactively force apps to stop when your device screen turns off. This often causes apps with the Accessibility permission to lose this permission. In this case, you need to manually re-enable the permission to maintain full functionality of the app.

To re-enable the Accessibility permission, go to SettingsAccessibility on your device and grant the permission to Avast Mobile Security.

On Huawei, Lenovo, Asus and Sony Xperia devices, you can change the system settings to prevent the app from losing the permission. Follow the steps for your device:

  1. Tap the Phone Manager icon on the main screen of your device to open the app.
  2. Go to Settings and select the Protected apps tab.
  3. Turn on the protection for Avast Mobile Security.
  1. Open your device Settings.
  2. Select Background app management from the list.
  3. Deselect Avast Mobile Security.
  1. Open your device Settings, tap Power management, then tap Auto-start Manager.
  2. On the Downloaded tab, tap Deny next to Avast Mobile Security to change this setting to Allow.
  3. Tap Allow to confirm the setting change.
  1. Open your device Settings and tap Battery.
  2. Tap the three-dot menu icon in the top-right corner, then tap Battery optimization.
  3. Tap the Apps tab and tick Avast Mobile Security.

How can I stop App Locking from repeatedly asking for a PIN?

Ensure that the Permanent notification is enabled. When this notification is disabled, Android may cause issues with App Locking or kill the Avast Mobile Security process.

How can I reset the PIN for App Locking?

If you forget your App Locking PIN, reset it by following these steps:

  1. Go to MenuSettingsPIN & patternChange PIN.
  2. Tap the menu icon in the top-right corner, then tap Reset PIN.
  3. Type your Google Account credentials and create a new PIN.

What can cause Avast Mobile Security to stop running?

Ensure that Permanent notification is enabled. If it is disabled, Android may kill the Avast Mobile Security process and stop the app.

How does Avast Mobile Security protect my device?

When configured correctly, Avast Mobile Security protects your device from known malware and threats and monitors data going in and out according to your preferences. We do our best to protect your device against all possible threats, but no solution is 100% effective.

Like all products on the Android market, it is subject to limitations imposed by the operating system version which is running on the device. It cannot protect against exploits targeting specific vulnerabilities in the OS kernel, the network stack and other fundamental parts of the system. However we take our role in the security industry seriously, and continuously work with Android vendors to develop future solutions to minimize the risk of attacks.

What can I do when Avast Mobile Security cannot remove malware?

In some cases, Avast Mobile Security detects malware but cannot uninstall it. This is usually caused by the level of permissions granted to the suspicious app or by installing this app on the system level (for example on rooted devices). For more details, refer to the following article:

How can I report a false positive detection to Avast Threat Lab?

In some cases, Avast Mobile Security may detect and mark a clean file as malware. You can report false detections to Avast Threat Lab directly from the scan results screen:

  1. Tap the Menu icon next to the file that you want to report.
  2. Select the Report as false positive option.
  3. Type a description of the issue and enter your e-mail address (if you want to be notified when the file analysis is finished).
  4. Tap Send.

General

How can I check if my virus definitions are updated?

Virus definitions are updated automatically. Go to MenuSettingsUpdates to check the virus definitions version and the date when it was installed. You can also tap on Check for update to make sure that you have the latest version installed or tap on Update over Wi-Fi only to prevent updating when the device uses mobile data transfer.

Why does Avast Mobile Security need so many permissions?

Avast Mobile Security requires many permissions that may seem unnecessary at first glance.

This is because permission classifications in Android are assigned a name based on the most common use case, but do not describe all the kinds of processes that require the permission.

For example the Directly call phone numbers permission is needed to implement the Call Blocker functionality, not to make any phone calls. Another example is that full internet access permission is required to receive updates to malware definitions. Scan and Web Shield need permission to read phone data so the data can be scanned for threats.

We take your privacy very seriously. The permissions requested are the minimum set that are needed to implement the functionality of Avast Mobile Security.

How much battery does Avast Mobile Security use?

Avast Mobile Security is designed to have minimal impact on battery life.

Testing across multiple devices shows that all services by this app generally take up less than 5% of battery consumption. (By comparison, the Launcher can take up about 15% and Gmail about 8%.) During a few operations, Avast Mobile Security can reach, at maximum, 20% of battery use at the peak of CPU use (about 30-60 seconds).

Why doesn't the Firewall feature work on my device?

If Firewall does not work on your device, you may be using an unrooted device. Unfortunately, the Firewall included in Avast Mobile Security is only available on rooted devices running operating systems Android 4.0.3 or higher. The Firewall's functionality depends on access to several system features which require root privileges.

Do I have to "root" my device to use Avast Mobile Security?

Rooting is a process which allows Android users to attain privileged control of their devices (known as root access) within the Android system. Rooting allows the user to override limitations set by carriers and hardware manufacturers. This makes it possible to alter or replace system applications and settings, and run specialized apps that require administrator-level permissions.

For most of the functionality within Avast Mobile Security rooting is NOT required. In fact, rooting your device is generally not as secure and therefore not recommended. However, users who choose to root their devices are exposed to higher risks, and that is why we include features to provide additional protection.

The main advantage of a root installation is the Firewall feature in Avast Mobile Security, which allows you to control network access on a per-app basis. This improves security, blocks unwanted advertisements, and even preserves battery life. Unfortunately, this feature is not available for non-rooted devices due to some limitations of the Android platform.

How is Avast Mobile Security different from Avast Antivirus for desktop computers?

Scan and Shields included in Avast Mobile Security use different definitions than the ones used in our antivirus software for PCs. The application is customized to run on mobile devices, and so the definitions are specific to malware which attacks mobile platforms. This saves your device from being overloaded by our PC antivirus engine, which includes an enormous amount of malware data which is not relevant to your mobile device.

How can I report an issue to Avast Support?

We offer many self-help articles in our Support pages. However, some issues may require deeper investigation by Avast Support.

Report any issues to our support department as described in the following article:

How can I provide feedback about the app?

Please report any issues to our support department, as described in the following article:

You can provide feedback about Avast apps in several ways:

What other mobile apps does Avast offer?

Avast has created the following range of apps to improve the security and performance of your mobile device, and protect you from hackers and thieves:

  • Avast SecureLine VPN: Prevent hackers from accessing and stealing your data when you are connected to public or open Wi-Fi networks, secure your personal Wi-Fi networks, and protect your privacy using the SecureLine private encryption VPN.
  • Avast Cleanup: Improve the performance and efficiency of your device with our Cleanup app, which quickly analyzes the storage space on your device and clears all unnecessary, space-wasting data.
  • Avast Passwords: Keep all of your passwords protected and easily sign into your online accounts using one main password. You can synchronize this app across multiple devices.
  • Avast Battery Saver: Improve the endurance of your device battery between recharges with Avast Battery Saver which stops unnecessary apps from running in the background and helps you optimize your device settings.
  • Avast Wi-Fi Finder: Connect to secure public Wi-Fi networks quickly and easily wherever you go using Avast Wi-Fi Finder.
  • Avast SecureLine VPN: Prevent hackers from accessing and stealing your data when you are connected to public or open Wi-Fi networks, secure your personal Wi-Fi networks, and protect your privacy using the SecureLine private encryption VPN.
  • Avast SecureMe: Checks Wi-Fi networks for vulnerabilities such as routers with weak passwords, or unsecured wireless networks. It also includes a basic VPN service that guarantees safety when a device is connected to a public network.
  • Avast Passwords: Keep all of your passwords protected and easily sign into your online accounts using one main password. You can synchronize this app across multiple devices.
  • Avast Wi-Fi Finder: Connect to secure public Wi-Fi networks quickly and easily wherever you go using Avast Wi-Fi Finder.
  • Avast Call Blocker: Helps you avoid unwanted calls, including those from numbers you may not recognize as spam.
  • Avast Photo Space: Optimizes the photos on your device and transfers the original, high quality versions to your cloud storage service.
  • Avast Mobile Security 6.x
  • Google Android 4.1 (Jelly Bean, API 16) or higher

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