Unlocked? (or Part Number): Unlocked from Maxis
Current Firmware : 4.0.1
Current network: Maxis
iTunes Version : 9.0.2
PC/MAC : PC and MAC
Jailbreaking software : JailBreakME
Problem Encountered :
1. Speaker and Mic seems to be lower than usual
2. Wifi signal is really low compared to other devices in my house [and also another iPhone]
3. 3G signal seems to drop alot and always slow and cant detect
4. Google Maps showing me in a location 100m - 2000m away from me therefore i can't detect where im at or getting a good location on a GPS

Steps Taken So Far : Restarted / Rebooted / Re Factory Settings / Enalbe disable 3G

Screenshot of Problem(if applicable) : none

Other Information/Remarks : This has been happening for quite a while. The signal of my phone seems to be low at everything . The Wifi/3G/Edge .... The GPS/aGPS is not showing at my correct position. What can i do to fix this?

Anybody can still help me on this?