I recently switched from AT&T and now I regret it. I live in Denver so I’m not rural. I live in a house, not an apartment building. With AT&T I rarely had less than three bars signal strength and usually four. Now I normally have one! And too often I receive the message that I don’t have service! When I try to send a text I get the spinning circle and then the faint little red triangle. Try again? Doesn’t do any good. Go outside, might work, might not. When I get service I know it because I get a string of beepidybeeps. Now I find that they sell “signal boosters” for T-Mobile phones. What gives?