I just switched to AT&T from Verizon yesterday. Seems to be ok, except I can't send or receive MMS with Verizon users. I've tried two contacts...and both the stock messaging app on my LG G3 and Go SMS Pro.
In Go SMS I made sure the setting was to limit mms to 300k, which was what I was using on Verizon.
Googled this issue 'mms at&t to Verizon' and seems to be somewhat common. Honestly, it's a deal breaker with at&t if it won't work.
Also sent to a Sprint user but haven't heard back yet if they got it.
Oh, and it works fine to my wife, also on AT&T.
In Go SMS I made sure the setting was to limit mms to 300k, which was what I was using on Verizon.
Googled this issue 'mms at&t to Verizon' and seems to be somewhat common. Honestly, it's a deal breaker with at&t if it won't work.
Also sent to a Sprint user but haven't heard back yet if they got it.
Oh, and it works fine to my wife, also on AT&T.