This supposedly went out to impacted customers today by SMS text:
http://www.att.com/3gmigration
Quote:
What to know about 3G going away
To bring you faster speeds and new capabilities, we have to evolve our network through a number of changes. One of those changes is phasing out our 3G network by February 2022. Once we do, 3G devices and some 4G wireless devices (those that aren’t HD Voice capable) won’t work on our network anymore.
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Notice it says BY. That could mean before, depending on your region in the USA.
BMW did not handle the 2G sunset very well, so it is going to be interesting if they handle the 3G sunset any better.....