Work phone is ATT, personal phone is T mobile.

No complaints for either. I get out into the wilds of west Texas a lot, oil patch territory, haven't had a lot of issues with reception but there is a reason I carry two phones using two different carriers. Mostly, it's a hold over from the days when coverage was a lot more spotty. But I still get into areas with no coverage at all. It's like being back in the 80's, lol.