Next step: This electrical current is fed from the motherboard when you go into a service menu and hit "replace battery". In fact, the screen and various ot

Next step: This electrical current is fed from the motherboard when you go into a service menu and hit "replace battery". In fact, the screen and various other parts are held on with the same adhesive, and its strong enough that unless you go into this service menu you wont get it apart without damage. And then the service menu is locked and will only work if you're apple authorized or meet some very stringent criteria like uploading 3 copies of your passport and driving license and a receipt showing purchase of the phone in the same name.