If the phone doesn't finish rebooting, press & hold the Power button until the screen turns dark, then release it to power up normally. Allow several minutes for the reboot to complete.Use Volume buttons to scroll to Reboot system now, then press the Power button to select it.Use the Volume buttons to scroll to Wipe data/factory reset, then press the Power button to select it.If you see an Android robot with a red exclamation mark, press and hold the Power button, then press and release the Volume Up button to display the menu options.Press the Power button to restart in Recovery mode.Press the Volume Down button until you see Recovery mode.Press and hold the Volume Down button and the Power button at the same time until the phone turns on.Make sure your battery is charged at least 30%.However, if you personalized your wallpaper or startup message at the time of purchase, you can preserve the personalized content shipped with your phone. Everything will be deleted from your phone.
