I have a 270, using the T-Mobile network in the New York metro area. I've had frequent problems with the phone freezing up in a way that leaves me unable to receive calls (despite two bars showing) or do anything with the phone. I have to wait until the cursor starts flashing again, then turn off wireless mode and turn it back on. In addition to the random freezes, which can happen at any time regardless of signal strength in the area, the phone is unable to get back on the network by itself once it loses the signal for whatever reason. If I get on the subway, I have to turn wireless mode off and back on when I get out. I'm using GPRS version 1.1.1. Would upgrading to 1.1.2 make a difference (I had the same problems before I had GPRS at all), or does this sound like a hardware problem?