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The Samsung Galaxy S24
BigBoyBig1974's profile



3 Messages

Friday, May 21st, 2021 11:41 AM


ATT's new network changes


I'd like to know more info or, at the very least, links as to why certain dual SIM Samsung phones are no longer compatible.

More specifically, I'm using my Samsung Galaxy Note 9 Duos SM-N960F/DS that is on ATT thru my job. Every time I insert and remove the existing SIM in the tray, I'm greeted with this message:

"AT&T FREE MSG: We're always looking for ways to connect you to what you love faster than ever before. We're sorry, but the phone you recently activated is no longer supported. Upgrade your device: contact your AT&T account manager, visit att.com/premier, or business.att.com"

Any links or additional info on this matter will be most helpful.

Thanks in advance for all your help.😊

Accepted Solution

Official Solution

ACE - Sage


118.3K Messages

3 years ago

At&t uses their own version of voice over LTE, they call it HD voice.   Phones have to be certified for the programming by the manufacturer.   Only phones sold for the USA will have the certification.  The only dual sim are a few one plus phones and iPhones.   I forgot pixel 4/4xl.   


New Member


9 Messages

2 years ago

My phone just stopped accessing voice services, it took a week to find out that because my note 8 doesn't have LTE it will no longer work. They offered to lock me in for 36 months if they sent me a piece of crap phone. Not. This happened without notice and they had to know what was going to happen when they upgraded. This should be an open call for a (Edited per community guidelines) (Edited per community guidelines). 


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