I have an iPhone 3G S that I got the day it came out. This issue started roughly a few weeks after I brought it home with me. If I have my phone sitting on a desk or table (it doesn't matter where I am) the signal stays at 5 bars. When I pick it up, no matter how I hold the phone, the signal rapidly drops to one bar. I never noticed this issue with my 3g. So it looks like for me, the network itself appears to be fine whenever I'm not touching the phone. Is anyone else experiencing this issue? Does anyone have any thoughts?