To completely clear your phone, you'll need to perform a factory data reset. Here's how:
- Go to your phone's settings. The location may vary slightly depending on your Android version and manufacturer.
- Find "General management" or "System". Look for a section that deals with overall phone settings.
- Select "Reset". This will bring up options for resetting different aspects of your phone.
- Tap on "Factory data reset". Be extremely careful here; this will erase all data on your device.
- Review what will be deleted. The screen will list all the data that will be removed, including your accounts, apps, photos, videos, music, and settings. Make sure you've backed up anything important beforehand.
- Click "Reset" or "Wipe". You may need to confirm your decision with your PIN, pattern, or password.
After confirming, your phone will begin the reset process. This may take several minutes. Once complete, your phone will be in the same state as when you first purchased it.
