Originally Posted by Sparks1990
Hbryder, I've tried it with wifi off. So far nothing is working. I've played with just about every setting I can find.
The only other thing I would try is to do a battery & sim pull from the phone, while the phones on pull the battery, then take the sim out. Wait 30 seconds then put them back in. If that doesn't help you might just need to get a new s4 from att. (I hope it isn't the same issue I was having with tmobile when I upgraded to the s3, my local tower was in the process of switching, so my signal was so bad for a few months I had to use wifi at home. )