Open Settings
Tap System or General management
Tap Reset options
Tap Factory data reset
Review the warning
Tap Reset phone or Erase all data
Enter your PIN, password, or pattern
Confirm the reset
Wait for the device to restart
Set up the phone again
Open Settings
Tap System or General management
Tap Reset options
Tap Factory data reset
Review the warning
Tap Reset phone or Erase all data
Enter your PIN, password, or pattern
Confirm the reset
Wait for the device to restart
Set up the phone again