OK so my 3GS was on 4.1 JB with greenpois0n and last week noticed that my GPS was about 2 miles off everytime with no signal lock and also WiFi would not pick up any router unless it was within about 10 feet. So I restored to 4.3.2 and JB with redsn0w. Same issue. I have tried resetting network and location notifications with no luck. Anyone else having this or have any idea? I'm starting to wonder if it's a hardware issue and the antenna just failed?