1. jslice7's Avatar
    After downloading the Lumia Black update, I am now unable to send any MMS messages on my 928 on the T-Mobile network.

    Is there any way to download the GDR2 update again to replace the Black update?
    02-15-2014 11:44 AM
  2. allos autos's Avatar
    There's no way to rollback system updates. Once they're done, they're done. What you might try to do is manually add T-Mobile's MMS vpn settings (Settings>Cellular).

    NB: You might be able to rollback if you have a developer account or something, but I'm pretty sure it's not straightforward and will likely void your warranty several times over.
    02-15-2014 01:20 PM
  3. jslice7's Avatar
    Thanks! Manually entering the MMS settings fixed my issue.
    02-15-2014 04:02 PM
  4. Vernon Amos's Avatar
    Are you able to send and receive as well?. Did you input your MMS settings under cellular or Access Point?.

    02-16-2014 02:23 AM
  5. jslice7's Avatar
    I can send and receive MMS and text messages. Group messaging works fine also.

    Couple of notes:
    Cellular network must be set to 2G in order to send text messages

    MMS settings were manually inputted in cellular settings: APN: fast.t-mobile.com MMSC (URL): http://mms.msg.end.t-mobile.com/mms/wapenc MMSC port: 80 (this popped up automatically for me) Maximum MMS size: 100 (note: originally I set the size to 1, but the photos were super small when sending)

    Also, in messaging settings, make sure to click on "MMS delivery confirmation". Without this checked on, sometimes MMS messages show up blank to recipients
    02-16-2014 12:27 PM
  6. Silverdogz's Avatar
    This might be due to the fact that the 928 is a Verizon phone. Therefore the VZW Lumia Update would come with the VZW MMS settings
    02-16-2014 01:32 PM
  7. Vernon Amos's Avatar
    Thanks for the info. Finally got MMS working for ptel. I was using Access Point before but wasnt working.
    02-16-2014 04:32 PM

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