The migration means new RCS features will be available on AT&T devices as soon as they're ready. News 

AT&T Utilizing Google’s Jibe Platform for Rich Communication Services Messages

Since 2021, AT&T has been supporting RCS messaging on Android phones, but some customers have reported issues with interoperability between different devices. However, this is set to change as Google’s senior vice president of Android, Hiroshi Lockheimer, announced on Twitter that AT&T is moving its RCS backend to Google’s Jibe platform. This migration will provide AT&T customers with the latest RCS features instantly and resolve any lingering interoperability issues between AT&T phones and devices on different networks. Today I’m excited to share that we’re working with AT&T to accelerate adoption…

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