It's not just AT&T that has issues with all of the buzzing iPhone users. The United Kingdom's O2 mobile service has issues with the device too.
As we previously mentioned, AT&T is considering charging iPhone users for Internet data usage as its finding it difficult to handle all of the activity, particularly in dense urban areas like New York City and San Francisco.
Well, now iPhone 3GS customers across the pond are also dealing with repeated dropped calls and stalled Internet service. According to the Financial Times, O2 reps say its due to an "explosion" in Internet usage demand, particularly in London, and O2 has even apologized to its users for the problem.
It doesn't sound like they're planning on charging their users more for extra data service (they're even installing 200 more mobile stations in the British capital to help ease the problem), but I wouldn't rule it out.
And just to add to that, I'd like to mention as a both an AT&T and Orange France iPhone user that I'm always having reception issues, no matter what country I'm in. Maybe the world just isn't ready for the iPhone...