Hello,
I just got an AT&T Lumia 920 yesterday, and both data and mms have not been working. I have almost full signal strength, and it says "4G" next to the signal strength icon, but any time I try to access the internet or use an app that needs access to the internet with wi-fi off, I am told there is a problem with my connection. I have tried turning off and on the phone, removing and reinserting the sim card, and I even did a hard reset. Same problem. Voice works, but no data, but i have my data set to "on." Can someone with AT&T go into their cellular settings and tell me all the APN settings to input? You should be able to see them if you go into settings > cellular > and tap "edit internet apn" and "edit mms apn." It looks like there are no APNs set up on my phone because all it says is "add internet apn" and "add mms apn."
I just got an AT&T Lumia 920 yesterday, and both data and mms have not been working. I have almost full signal strength, and it says "4G" next to the signal strength icon, but any time I try to access the internet or use an app that needs access to the internet with wi-fi off, I am told there is a problem with my connection. I have tried turning off and on the phone, removing and reinserting the sim card, and I even did a hard reset. Same problem. Voice works, but no data, but i have my data set to "on." Can someone with AT&T go into their cellular settings and tell me all the APN settings to input? You should be able to see them if you go into settings > cellular > and tap "edit internet apn" and "edit mms apn." It looks like there are no APNs set up on my phone because all it says is "add internet apn" and "add mms apn."