My experience with AT&T in my smaller city has improved quite a bit and we don't even have LTE yet. It's reasonably quick and reliable with my iPad 4, also my iPhone with iphone extended battery
and my JIAYU G3
, unlike how it was even six months ago. I'm satisfied and LTE should be that much better. As a whole is just hope nothing breaks or stops working and you need customer service and tech support. I'd rather have a bunch of chimps through crap at me than to deal with that hell again.