While I unfortunately have no idea how to fix it, I just wanted to let you know I feel your pain. I am in college, and last year I was living in the same apartment complex I lived in the year before, just a different apartment. I had the exact same phone both years, the original Droid. Yet for some reason, last year there was a 2 block radius around my apartment where I had absolutely no service whatsoever. I had to buy a network extender, and this only worked half the time. I went through EIGHT Droids, before they finally gave me a Droid 2. This Droid 2 worked with the network extender, but it made no sense to me why this was even an issue. My roommate had the HTC Incredible with Verizon, and his phone worked just fine. I went through so many tech support guys at Verizon, made it to level 3 numerous times, and they never could figure out why in the world this was happening. Go figure. They suggested changing phone numbers, but I did not do this, because I didn't want to and it made no sense why this would fix the issue. Heck, they only said it might fix the problem anyway.
Now I have the HTC Trophy and I am living in a different apartment complex. It works fine here and I ventured over that way just to test it out and it worked fine there. Makes absolutely no sense. But yeah, I feel your pain and I hope you solve your issue.
Hi there! This is a unique situation and I feel your frustration! I did not come across any related items for this phone and asked several colleagues, too. My first recommendation is a soft reset by pulling the battery for 10-20 seconds while powered on. This is a common troubleshooting step and something you may have already completed. I also want to bring up the master reset as an option. It's very important to ensure you have all your personal information backed up before the reset. Beyond that, if the issue is not resolved, we will go where the issue began and that is to change the mobile telephone number. Maybe you would prefer that before the master reset, it's up to you. Depending on when the number was originally changed, I would think maybe you've given it out to all your friends and family by now. That's why I offer it last. I'm happy to do this for you and waive the standard 15$ fee.