im having a problem where i cant use cell data on my iphone 3gs. it has the 3G icon on the status bar. but when i try and do anything that would use it the request times out. i cant browse website or anything. also when i connect it to wifi it works just fine. ive tried restoring but that didnt fix it. and when this first started happening if i turned off 3G and just used EDGE it would work but now EDGE doesn't work either. anyone seen this problem or know of a solution? thanks!