iPhone 3GS, ATT MicroCell, iOS 4.0.1, failure to connect I was a very happy customer of my microcell until the upgrade to 4.0 and the subsequent patch. Now, at best, I can force an M-cell connection by flipping to airplane and back. I have completely reinitialized the M-cell. Is there way way around this except to whine to AT&amp;T and wait for someone to fix something?
Try resetting your network settings. Many iPhone connectivity issues can be resolved with that.