Effective January 1, 2017 your 2G mobile device has been rendered obsolete on the AT&T wireless network. You may have the option to move your device to T-Mobile but it will not longer work on AT&T. You will need to upgrade to a 3G or higher level device to continue your service with AT&T.
Here is an excerpt from AT&T’s website:
To help support increasing mobile Internet usage and continue to provide you with a great customer experience, we started to discontinue service on our 2G wireless network as of December 31, 2016.
AT&T wireless customers attempting to use this network after the shutdown will be unable to:
- Make or receive calls, including emergency calls.
- Send or receive text messages.
- Use data services.
We’ve provided advance notice and numerous communications about our 2G migration to provide a long lead time for upgrading to a 3G or 4G LTE device.
Read more here: https://www.att.com/esupport/article.html#!/wireless/KM1069631