I got this phone last year and so far I've been very happy with it. The only problem is that my company recently moved to a new building and now I don't get any signal whatsoever when I am at work. This is especially strange since my desk is within 15 feet of a bunch of windows. Is there anything I can do to increase the signal when indoors? If not, are there any phones that I can get with a stronger signal and still stay on the same $30/month t-mobile plan?