Chosen Solution
Any1 has motherboard schematics for iphone 4? If so i heard that they are many models not only one motherboard for iphone 4. So please answer all my questions!
http://newgsmsolution.blogspot.dk/2011/0…
The logicboard schematic is very detailed and not easy to follow. Unless you know how to read it, it is somewhat useless for ordinary repair. It might just be easier to let us know what is wrong with your iPhone, so as to solve the actual problem.