Asus

1. Open your device Settings.
2. Tap Power management, then tap Auto-start Manager.
3. On the Downloaded tab, tap Deny next to your Avast app to change this setting to Allow.
4. Tap Allow to confirm the change.

Huawei

Follow the relevant steps below, depending on your EMUI version:

Huawei (EMUI 10.0 and later)

1. Open your device Settings, then go to Battery ▸ App Launch.
2. Tap the slider next to your Avast app so it turns Off.
3. In the dialog that appears, ensure Auto launch and Run in background are enabled.

Huawei (EMUI 5.0 - 9.1)

1. Tap the Phone Manager icon on the main screen of your device (or open Settings ▸ Battery).
2. Tap Lock screen cleanup.
3. Ensure the slider next to your Avast app is gray (OFF) and the app is set to Don't close.

Huawei (EMUI 4.9 and earlier)

1. Tap the Phone Manager icon on your device's Home screen.
2. Go to Settings and select the Protected apps tab.
3. Turn on the protection for your Avast app.

Lenovo / Lenovo Zuk

Follow steps A, B, or C below, depending what matches your device navigation:

1. 1. Open your device Settings.
   2. Select Background app management.
   3. Deselect your Avast app.
2. 1. Open your device Settings and select Apps.
   2. Choose your Avast app, then tap Battery.
   3. Disable Battery optimization.
3. 1. Open Advanced Settings and select Battery.
   2. Tap Battery Optimization.
   3. Tap your Avast app and select Off.

Nokia

1. Open your device's System settings.
2. Tap Apps, then select your Avast app.
3. Tap Battery and select Don't optimize.

Further recommendations

If you continue to experience issues, ensure that Battery Saver is not enabled:

1. Open your device's System settings and select Battery.
2. Ensure Battery Saver is disabled.

Samsung

Follow the relevant steps below according to your Android version:

Samsung (Android 11 and 12)

1. Open your device Settings and tap Battery and device care.
2. Tap Battery, then select Background usage limits.
3. Tap Never sleeping apps.
4. Tap + (the plus icon) in the top-right corner, then select your Avast app.
5. Tap Add to add the app to the list.

Samsung (Android 10)

1. Open your device Settings and tap Device care.
2. Tap Battery, then select App power management.
3. Tap Apps that won't be put to sleep, then select your Avast app.
4. Tap Done to confirm.

Samsung (Android 9)

1. Open your device Settings and tap Apps.
2. Tap ⋮ Menu (three dots) in the top-right corner, then select Special access.
3. Select Optimise battery usage, then tap the drop-down menu at the top of the screen and select All.
4. Tap the blue (ON) slider next to your Avast app so that it turns white (OFF).

Samsung (Android 6, 7, and 8)

1. Open your device Settings and tap Device maintenance.
2. Tap Battery, then scroll down and select Unmonitored apps.
3. Tap Add apps, then select your Avast app. Tap Done to confirm.

Sony Xperia

1. Open your device Settings and tap Battery.
2. Tap ⋮ Menu (three dots) in the top-right corner, then select Battery optimization or Power saving exceptions.
3. Tap the Apps tab and tick your Avast app.

Xiaomi

Follow the relevant steps below according to your MIUI version:

MIUI 11

1. Open your device Settings and go to Apps ▸ Manage apps.
2. Tap your Avast app.
3. Ensure that Autostart is enabled.
4. Tap Other permissions and ensure the following permissions are enabled:
   • Show on lock screen
   • Display pop-up window
   • Display pop-up windows while running in the background
5. Tap the back arrow, then tap Battery Saver and select No restrictions.

MIUI 9 and 10

1. Open either your device Settings, Installed apps, or App Management.
2. Tap your Avast app and ensure Autostart is enabled.
3. Tap Other permissions.
4. Ensure Show on lock screen and Start in background are enabled.
5. Tap the back arrow, then tap Battery Saver and select No restrictions.

MIUI 8

1. Open either your device Settings, Installed apps, or App Management.
2. Tap your Avast app, then select Other permissions.
3. Ensure Show on lock screen and Start in background are enabled.
4. Return to your main device Settings screen.
5. Select Battery ▸ Manage apps battery usage.
6. Tap Choose apps, select your Avast app, then select No restrictions.