I just switched from Cingular/ATT to TMobile. Main reason...dropped calls. I didn't have too many bars living in my garden apt here in Chicago and I can only make/receive cals in my living room. So, I really want to know if the problem was with the network or with my old Treo 650??? Can you please post if you have problems with dropped calls in your area? If you live in Chicago, I would really like to know.