How to Reset Android phone
Basic device reset steps
Open the Settings app on the device. Applications often have a gear shape (⚙️) or an icon with many sliders inside.
Scroll down and tap Backup & reset . This option may be in the Personal or Privacy section of the menu , depending on your Android version and device.
If you're using a Samsung Galaxy, tap General Management , then tap Reset .
Click Factory data reset . It's at the bottom of the menu.
Tap Reset Phone . After the reset process is complete, your phone will be formatted as it was when it left the factory.
For Samsung Galaxy, click Reset .
Enter the screen lock password. If your phone's screen lock is on, you'll have to re-enter your pattern, PIN, or password.
Click Erase everything to confirm. Immediately, all data on the phone will be erased, and the device will reset to its original default settings and configuration. The process can take several minutes.
On Samsung Galaxy, you need to select Delete All instead.
Restore factory settings
Power off your device.
Put the phone into Recovery Mode. Press and hold the specific button combinations specific to your device while it is powered off. Different phone models have different hotkeys.
For Nexus – Volume Up, Volume Down and Power button
For Samsung – Volume Up button, Home key and Power button
For Moto X – Volume Down button, Home key and Power button
Other devices generally use the Volume Down button and the Power button. Some devices with a physical user interface may use a Power button and a Home key.
Scroll down to Wipe data/factory reset (Wipe data/return phone to factory mode). Use the Volume Up/Down buttons to navigate the menu.
Press the Power button to select reset options in the menu.
Navigate to the Yes box to confirm your selection.
Press the Power button. The process of resetting and reformatting the Android device's factory settings will begin.