I just bought an old iPhone 2G off craigslist for $60.

I am using it on 3.1.3, unlocked on T-Mobile.

I get bad reception a lot of the time, where with my G1, I got great reception. This seems like a hardware problem. When I got it, I had DFU restored it to 3.1.2 then jailbroken & unlocked and the signal strength was also pretty bad. Now I am on 3.1.3 and it is still bad.

So I am thinking, there must be a way to mod the cell antenna with something to get better signal. Anyone ever try this or got any idea on how to do this?