Facetime and imessage is showing unsuccessful activation.
imessage and Facetime is showing unsuccessful activation after SIM swap.
iPhone 11, iOS 16
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If you can’t turn on or sign in to iMessage or FaceTime, read this support article --> If you can’t turn on or sign in to iMessage or FaceTime - Apple Support
Also try restarting your device. That cleared up an activation issue we had, and it doesn't hurt to try.