Read the warning. It will list all the data that will be erased.
Tap Confirm or Delete All . The phone will restart and begin the reset process. This takes 2–5 minutes. Method 2: Reset via Recovery Mode (For Locked or Non-Booting Phones) Use this method if you forgot your screen lock, the phone is stuck on the logo, or the screen is unresponsive. How to Factory Reset 360 F4
Unlock your 360 F4 and go to the Settings app (gear icon). Read the warning
If prompted, enter your phone’s PIN, password, or pattern. enter your phone’s PIN
Scroll down and tap on Backup & Reset (may also be labeled Privacy or Advanced Settings depending on your ROM version).
Tap on Factory Data Reset .