Xiaomi Mi 3W

1st method

  • Go to Settings -> Backup and Reset -> Factory Data Reset -> Reset Device -> Delete all
  • Wait until phone reboots

2nd method

  • Power off the phone
  • Press and hold Volume Up (Yellow) + Power on (Blue)
  • When phone enters MI-Recovery use Volume Up (Yellow) and Volume Down (Red) to navigate
  • Select Language and press Power On (Blue)
  • Select Wipe All Data and press Power On (Blue)
  • Confirm by selecting YES and press Power On (Blue)
Xiaomi Mi3 Hard Reset
Xiaomi Mi3 Hard Reset

Let us know if worked by leaving a comment :)