So I got my DX. I use it in the same place where I used my Droid for a long time. Never had signal issues. DX has a horrible battery life. I have to charge it often. I look up the battery history / Cell standby and it says it has been 50% of the time without a signal! I hever had issues with dropped voice calls but have noted slow data transfer or loosing data on the phone every now and then. Can you look into your battery usage and click on cell standy and see if it says it has been without a signal? Is this a DX issue?