Google blocks RCS messages on rooted Android devices. Many users reported that chat messages over the new protocol suddenly stopped working. Google says this is a spam prevention measure.

User report on various social media, Including Reddit And XDA Since the last update to the Messages app, they can no longer send RCS messages. This appears to be due to the fact that these users have rooted their Android phones. A user appears in the video He can no longer send messages.

Google Confirms to the edge They have already implemented a security procedure. The company says it implements certain security measures in accordance with the RCS standard. The company will do this to combat spam and abusive messages. According to Google, a large portion of the spam spread via RCS is due to automation, which the measures should help prevent.

According to Mishal Rahman Google has something called ratification-Built-in controls to block messages. This is done via the Play Integrity API. This means that not only rooted devices, but also devices that have obtained certain certificates, will no longer support RCS.