Factory Reset Po o Wipe All Data!
Instructions
To reset your iPhone or iPad go to Settings > General > Reset and then select Erase All Content and Settings.
After typing in your passcode if you've set one, you'll get a warning box appear, with the option to Erase iPhone (or iPad) in red. Tap this.
You'll need to enter your Apple ID password to confirm the action, then the iPad or iPhone will wipe everything off its storage and go back to the initial setup screen you saw when you first used the device.
Sana Makahelp ako pero backup mo muna Iphone mo bago ka magreset baka may mahalaga kang FILES eh