AT&T is informing that some Oneplus and Asus devices will no longer be supported on their network

In a surprising, yet unpleasant, turn of events, AT&T is sending notifications via email to customers who own certain smartphones, urging them to buy other phones if they want to be able to keep using the carrier's network.

Several reports of users complaining have come in the past day worrying if their phone will be deemed useless.

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AT&T has already published a list of smartphones that are compatible with its 4G data and calling services, so if your phone is not there, chances are that you'll get such an email pressuring you into buying a new phone in the next 19 months or so.

The email contains a link that redirects to a support page that offers more details about the changes that AT&T is making to its network. If you didn't know, AT&T will discontinue its 3G network in February 2022, so phones that are not compatible with 4G data and voice calls will no longer work.

We believe the issue is likely because of unofficial support of unlocked devices that do support Volte but are not listed on AT&T's supported devices page. However, owners of such devices might not have to worry at all.