As much as I love T Mobile's policies, I hate their coverage. I get 0 bars inside non-wood buildings, but when I step outside, I get a few bars. I live in a somewhat hilly area, so I get spotty reception in certain parts of town. I really wish they would spend more money trying to improve their coverage instead of telling everyone how they are so different. Because even if they are different, if they have poor coverage, they won't get a lot of customers.
If you don't mind me asking, where are you located? I get good T-Mobile reception inside all types of buildings in and around the Kansas City metro. The only place I've ever lost coverage is in the basement floors of my doctor's office away from windows.
I am currently in Charlottesville, VA (it is kind of like a suburb). It has a lot of hills, which affects the reception. Every carrier other than T-Mobile has signal boosters placed throughout the city to counteract spotty coverage.
I've noticed that I only have issues when I go into a building that's not made mostly out of wood. At McDonalds or something, I get great reception, but when I step into a lecture hall or a federal building, the reception drops to 0 bars. Immediately outside of it, the reception is fine.
Aside from getting a phone with a really strong antenna, I'm not sure what to do about this.