As early as September 28, 2023, SMS messages will no longer be available when you update your Messenger app.
If you use Messenger as your default SMS messaging app for your Android device, please note you will no longer be able to use Messenger to send and receive SMS messages sent by your cellular network when you update your app after September 28, 2023.
You will still be able to send and receive SMS messages through your cellular network and access your SMS message history through your phone’s new default messaging app. If you do not choose your own new default messaging app, your SMS messaging will automatically go to your phone’s default messaging app, such as the Android Messages app. Learn more about how default SMS messaging apps work at the Google Help Center.
Source:
SMS is no longer available on Messenger | Messenger Help Center
SMS is no longer available on Messenger. Your SMS messaging will go to your device's default messaging app.
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