Il Mio Problema
My iPhone used to die in a matter of a couple hours
La Mia Riparazione
After I replaced the battery, this little guy runs for days at a time.
Il Mio Consiglio
My advice is to somehow remember which screw goes where, because I missed up on that part and I have a couple of screws not in their original place. And fyi, the screw sizes differ from one place to the other, so keep good track of them.