So after a few weeks of using my G1 successfully, I regret to post that I have run into one critical issue here that seems to be a show stopper in terms of every day functionality. I can use the G1 anywhere in Chicago-land without problems. I do get spotty 3G signals, but that’s to be expected as T-mobile expands their 3G networks. But every time I come to downtown Chicago and get to my office the G1 will lock up and become unresponsive. The only fix that I’ve found to this is to pop the battery out to restart it.

I’ve reached out to T-mobile support several times, and one suggestion was to put the phone into 2G mode only (Settings > Wireless Controls > Mobile Networks > Use only 2G networks), and this has helped the situation, but several times a day the phone will lock up.

One fix that I’ve tried that has also worked is to put the G1 into airplane mode that will disable all the wireless functions on the device, basically makes the phone useless with the exception of looking at it and using apps on it that don’t require a mobile or wireless network to be functional.

Have others run into the same problem downtown Chicago?