Hello, lately I was disassembling my iPhone 3GS (only motherboard was disassambled) after reassembly everything works but GPS. Wi-Fi signal is really strong - just fine. Same with Bluetooth.
My 6 connector is sitting well. When I unplug it, Wi-Fi and Bluetooth signal are very poor.
Small pins in bottom right corner of the phone also seem to contact well.
There is some GPS signal (not Wi-fi or cellular assists, but acutal GPS signal) but it is really poor comparing to my brother's iPhone. Too week to use turn-by-turn navigation, which was always working extremely well.
I even bought a new GPS/Wi-fi antenna and I connected it without mounting and it seems to behave exactly the same, so I doubt it's because antenna - I tried to be very gentle to not broke anything while disassebling motherboard.
Have you guys any ideas? I really need GPS in my iPhone since it is my only navigation system.
Please forgive my bad english.