Make sure your device is protected
You can set up your device to prevent other people from using it if it gets reset to factory settings without your permission. For example, if your device is lost, stolen, or wiped after you've set it up to prevent others from using it, then only someone with your Google Account or screen lock information could use your device.
Help protect your device
- Set a screen lock.
If your device is lost or stolen and you have a screen lock set, the device can't be erased using the Settings app unless your screen is unlocked.
If your device is stolen and you don't have a screen lock set, you can still lock it remotely with Android Device Manager. You'll need to have added your Google Account to your device before it was lost or stolen, and your device will need to be turned on and connected to the Internet.
- Add your Google Account to your device.
If your device gets wiped but you have your Google Account on it, the device can't finish setup until your Google Account information is entered again.
Important: If you reset your Google Account password and need to do a factory reset, wait 24 hours after changing your password to reset your device. For security purposes, you can't use an account to set up a device after reset if that password was changed within 24 hours. Learn how to reset your Pixel phone or Nexus device, Google Play edition, or Android One device to factory settings.
Turn off device protection
To turn off device protection, remove your Google Account from your device.
If you have Developer options enabled on your device, you can also turn off device protection from your device's Settings app . Tap Developer options OEM Unlocking.
Verify your ownership after factory reset
Because your device is protected, you'll need to either unlock your screen or enter your Google Account password if you need to do a factory reset. This ensures that you or someone you trust is doing the reset.
Expect to unlock your screen or enter Google Account information if you:
- Erase your device's data using the Settings app .
You'll be asked to enter your screen lock before using Backup & reset.
- Reset your device in Recovery mode.
If you reset your device using the recovery menu, you'll need to enter a Google username and password that had been associated with the device.
- Remotely reset your device with Android Device Manager.
If you remotely reset your device using Android Device Manager, you'll need to enter a Google username and password that has been associated with the device.
Important: You can enter information for any Google Account that has been added and synced to the device as an account or user profile, but not the guest profile. If you can't give this information during the setup process, you won't be able to use the device at all after factory reset.
Amy is an Android expert and author of this help page. Leave her feedback below about the page.