I was always getting mad at my M9 for telling me I had no data connection or it would switch from 3g to 1x in the middle of refreshing a webpage or something. I had a terrible time keeping a consistent data connection on it. I live in a not so great coverage area that is definitely congested and so far so good with the V10. It hasn't failed to load anything or tell me I have no connection, it hasn't failed to send a text, which my M9 also did quite often. I've only made and received a couple quick couple minute calls, but so far so good there too.