You can use this guide to replace your iPhone's brain or main logic board circuit.
Before disassembling your iPhone, be sure the silent switch is activated and your iPhone is powered off.
Tools needed
* Paper Clip
* Phillips #00 Screwdriver
* Small Flathead Screwdriver
* Spudger
* iPod Opening Tools
Installing iPhone 4 Logic Board
Installing iPhone 4 Logic Board Assembly
10:01 AM
Katherine