Google Messages RCS is not working on rooted, custom ROM Android phones

Abner Li | Feb 29 2024 - 3:41 pm PT

In recent weeks, Android users with rooted or bootloader unlocked phones have found that RCS in Google Messages does not work.

Specifically, users cannot send or receive RCS messages. According to one report, a phone number might pass verification, but Rich Communication Services functionality does not actually work. Another example shows messages disappearing after tapping the send button.

Compared to when Google Wallet fails, there is no user-facing error message that indicates something went wrong. As such, users could be unaware that they’re missing chats.

Google confirmed to us today that some of those phones are prevented from using RCS, and cited the need to prevent spam and abuse by making sure devices abide by the RCS standard’s “operating measures.”

Top comment by JoshLLP

Liked by 6 people

So are rooted phones behind the increases in things like Gmail spam that have shot up significantly, at least for me, in the past couple of years? I suspect not, and so I'm not sure why rooted phones continue to be the big boogeyman for Google such that they have to restrict things like RCS access. Apple's eating Google's lunch when it comes to secure messaging; they didn't go crawling to the carriers asking for permission, they just rolled it out and didn't ask.

If Google wants more RCS adoption, they're going to have to start looking at big measures to do so and I wouldn't think that keeping enthusiasts from accessing basic functions is going to help them meet that goal.

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Impacted users have found that SMS/MMS continues to work on those rooted devices or phones that have their bootloader unlocked, which is needed to install a custom ROM. Google pointed to that continued availability of SMS as a fallback when RCS is not available.

This RCS issue was particularly prevalent in late November and has been intermittently popping up since then, including reports of issues starting today.

That said, those who are savvy enough to root have found a straightforward enough fix that involves bypassing the safety feature (Play Integrity API) that looks to be responsible for preventing RCS access.

Compared to Google Pay, banking, and other similar apps not working when you root, blocking key communication functionality on your Android device is a step too far for many. At the same time, preventing spam is a valid concern, but hopefully there are less blunt ways to protect RCS users that don’t infringe on Android’s customizability. Google should also better communicate to users when it’s not available.