HTC, well, I don't know what the problem is but hey have a very bad data connectivity issues. I mean most of the time, I need to switch the flight mode on and off to get the data network started. In fact the signal strength is also very low. Go for S4, better features and conncetivity
I spend a lot of time in a "weak signal" area for ATT. I have had phones that work great, and some that don't work well here. No reviews ever address this issue. Can someone tell me which of these phones works well in a weak signal area?

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