There are three ways of changing the Avast PIN for Anti-Theft:
- Avast Mobile Security allows you to change your PIN directly during verification using your Google Account credentials.
- Avast Account allows you to change your PIN remotely from any device using a web browser.
- Avast Mobile Security allows you to change your PIN from a locked device via the lock screen using your Google Account credentials.
Change your Avast PIN
To change your Avast PIN from a device which is locked:
To change your Avast PIN from the Avast Mobile Security app via Google Account:
- Access the lock screen by tapping any button or icon on your locked device.
- Tap Reset Pin.
- From the main Avast Mobile Security screen, tap
☰(three lines) ▸ Anti-Theft.
- When you are prompted to type your current PIN, tap the
⋮Menu icon (three dots) and select Reset PIN.
- You are redirected to the Google Account login page. Tap Next to confirm your e-mail address.
- Type your Google Account password and tap Next.
- Type your new PIN and retype it to confirm changes.
To change your Avast PIN via Avast Account:
- Log in to your Avast Account, then click the
Grid icon and select Anti-Theft. 
- Select your device.
- Click Settings.
- Select the Anti-Theft tab.
- Type in your new Avast PIN twice, then click Save.
Your new Avast PIN has been changed.
- Avast Anti-Theft for Android
- Avast Mobile Security 6.x
- Google Android 5.0 (Lollipop, API 21) or higher