09-25-2012 02:37:17 PM
09-26-2012 07:12:24 AM
Read through this thread, and it pretty much sums it up: http://forums.att.com/t5/Android-Discussion-and-Su
But to sum it up, you will need to make a no-cost change to your account (have LTE) added in order for MMS to work properly, and to get LTE data speeds. If you have unlimited data, you should be able to keep that and add LTE.