Factory reset on Android

A factory reset erases all data on an Android phone, including apps, accounts, settings, photos and files on internal storage, and returns it to its original software state. Before a reset, back up your data and make sure you know the Google account and screen lock, because factory reset protection asks for them afterwards.

1What is erased and what is not

Everything on internal storage is erased. The Android version and updates already installed stay. Data backed up to your Google account or other cloud services can be restored when you sign in again.

2Factory reset protection

If a Google account was on the phone, after a reset the setup asks for the screen lock or that Google account's password. This stops a thief from using a reset phone. Remove the account first if you give the phone away.

3Where to start it

Settings > System > Reset options > Erase all data (factory reset) on most phones; Samsung: Settings > General management > Reset > Factory data reset.

How to reset safely

1. Back up: Settings > Google > Backup, and check photos and messenger backups.
2. Write down your Google account and password; check that you can sign in.
3. Charge the phone above 50% or connect the charger.
4. Open Settings and search for 'factory reset', then follow the steps.

Related articles

• Find Hub (formerly Find My Device)How Google's Find Hub locates, rings, secures or erases a lost Android phone, and what must be turned on in advance.
• Freeing up storage on AndroidWhere Android storage goes, the built-in ways to free space, and what to check before deleting photos, downloads or apps.
• Safe mode on AndroidWhat Android safe mode is, how to start it on Pixel, Samsung and other phones, and how to use it to find a problem app.

Sources

1. Reset your Android device to factory settings (Android Help) support.google.com
2. Back up or restore data on your Android device (Android Help) support.google.com

Last reviewed: 2026-10-08