Installing iPhone 4 Logic Board

Descriptions :

Step 1 - Rear Panel Before disassembling your iPhone, be sure your iPhone is powered off and the silent switch is activated. Step 2 Remove the two 3.6 mm Phillips screws next to the dock connector. Apple has recently substituted the two Phillips screws with 5-point "Pentalobe" screws. If your iPhone 4 has 5-point "Pentalobe" screws instead of Phillips, please refer to the second picture. Remove the two 3.6 mm Torx screws next to the dock connector. During reassembly, we recommend you use the 5-Point Screwdriver to remove the 5point screws and replace them with the equivalent Phillips screws.