[Q] Nokia Lumia 800 on At&t

[Nokia_fan]

I recently purchased a Lumia 800 on Amazon (RM-801) but I cant get the MMS and voicemail to work. I downloaded the Network Set up App and the Diagnostic test where I can manually change the MMS setting but it tells me that the name At&t is already used. I would really appreciate it if somebody could help and walk me through it step by step in how to set up the MMS and voicemail for AT&t.
Thank you very much for your help I really appreciate it.

Toby

PS: Any news on the release date for the Nokia Lumia 800 in the MSFT stores?

 

[prjkthack]

You need to manually set the APN settings.

The APN "wap.cingular" without quotes should be all you need.

 

[Ted926]

same problem, adding the APN works for getting data, but still no MMS,

Do we need to reset the phone once the att network has been added?

also the voicemail thing is an easy fix, just call ATT and have them re-add it for free to your account.

if we have to reset, is there any way to backup SMS texts?