Buy the Apple iPhone 7 –
This is a video on how to perform a factory reset on a Apple iPhone 7. Reset and Restore.
All models –
Disclaimer – A factory data reset both hard or soft will erase all of your personal information on your device and return it to its out of the box state. You are doing this factory data wipe/reset on your device at your own risk. We are not responsible for any problems or technical difficulties caused from trying these techniques.
Things I use in this video