Il Mio Problema
Volume and sighlent switch didn't work.
La Mia Riparazione
You need one hour not for beginners.
Il Mio Consiglio
Flat able was completely broken, take care wit the mounting place. Check there is no pressure on the cable from battery.
P2 Pentalobe Screwdriver iPhone
iPhone 4 (GSM/AT&T) Headphone Jack & Volume Control Cable