Text Message from AT&T to Replace SIM

The message may be legit, but you should never click on a link.

You can take out your sim card and verify if the iccid number is capable of HD Voice or whether it needs to be replaced using AT&T's support article 

https://www.att.com/support/article/wireless/KM1062165/

I’ve never heard of ATT sending such a message but it definitely could be real. If you have an old SIM card, it might not support Voice Over LTE which will be required once the 3G network is shut down. You apparently have a phone capable of VoLTE but quite possibly an old SIM card that isn’t capable of VoLTE. I still wouldn’t click any links, though. I suggest you go to an ATT store for a new SIM card. 

Both of the above are excellent responses.

Additional info in case others get that message:

 The number that sent the message was "11112000".

 The link points to "att.com/getyourSIM/"

Thanks!

I called AT&T support twice and got two different answers:

-  First representative said you only need to replace phone if it does not support 4G, not the SIM.

- Second representative said hat AT&T sent that text out by mistake

So many answers; HaHa

Yeah, the support phone lines are, unfortunately, not a very reliable source of information for many things.  Ironic, eh?

The source number and URL point to it being a legitimate text, but you were 100% right to be suspicious. 

Hello @BlowingIntheWind! We want to advise that 3G is going away.

You will want to follow the advice from our ACEs and make sure that your SIM card is compatible with our network. It's possible to obtain a replacement SIM by visiting your nearest AT&T Store.

AT&T plans to end service on 3G/3G HSPA+ wireless networks on February 2022. This will enable our network to better accommodate next generation technologies and services.

To ensure the best possible experience, customers are encouraged to upgrade to an HD Voice capable device, upgrade their SIM, or both.

We hope this info helps. Thank you for contacting our Community & Forums.

Lar, AT&T Community Specialist

Thanks to ALL, for the responses! Very helpful and supportive community here.

- The pending 3G network may require a new SIM if you have an old one (see link, above, from "formerlyknownas"). And, of course, phone must support new standards.

- The text from AT&T was a valid courtesy notice, but suspicious due to the presence of bad players in the world.

Thanks again from this new member & long time AT&T customer (15+ years)

Anytime, @BlowingIntheWind!

Thank you for reaching out to our Community & Forums.

We hope you enjoy the rest of your day!

Lar, AT&T Community Specialist