Yes, LTE no problem. My Nokia 540 got Visual Voicemail no problem either. AT&T says dual sim phones aren't supported with Visual Voicemail and mine is dual sim. I don't really need dual sim, should have bought the standard model.
OK, just came back from the AT&T store, they knew exactly what I was talking about with Visual Voicemail. They provisioned the number (the SIM came from an HTC One to a Nokia 520 and now on a new 640). But Visual Voicemail didn't work. She then spent about 1/2 hour on the phone with AT&T support and talked to 2 people including the supervisor, who finally said Visual Voicemail is not yet working for the 640, only the 520.
Is this correct? Can anyone confirm that they have Visual Voicemail for the new 640 on U.S. AT&T? Thanks...
I can almost guarantee you the problem is on their end. I had this issue with my old 920 on cricket. To get it working I had to provide them with an IMEI number of phone purchased directly from Cricket. Then it would work. Guessing the way their system is set up is it will only enable visual voicemail for those phones they recognize as their own by the IMEI number.
Pretty ridiculous if you ask me.