RCS?

[DeadSecTr]

Is RCS possible?

[inson1]

SimpleMobileTools/Simple-SMS-Messenger#157

[yavko]

Maybe the code in https://android.googlesource.com/platform/packages/services/Telephony/+/refs/heads/main/testapps/TestRcsApp/ can be observed

[naveensingh]

I saw that too, may be worth looking into as there are no open-source players in the RCS game, and when RCS becomes more popular, people will have no choice but to use Google Messages.

One caveat is the internet permission.

[foolishgrunt]

Oh man, I would support the heck out of this! A legitimate FOSS RCS client is literally #1 on my wish list, especially considering that even Apple is adopting it later this year. I would gladly grant internet permission to Fossify if it could make it happen.

To be fair, I know "support" from a non-programmer is mostly cheap talk. But I could build code, test code, donate an old phone, donate money... anything to help make it happen!

[inson1]

Also this was mentioned in SMT https://github.com/android-rcs/rcsjta. Did somebody try it?

[foolishgrunt]

^That's a very stale repository - I imagine it wouldn't still be useful.

https://github.com/Hirohumi/rust-rcs-client seems to be a bit more current, but I couldn't tell you the first thing about how complete (or useful) it is.

[webdingspowah]

Here's all the documentation from GSMA from 04 June 2024 for RCS Universal Profile 2.7 (latest):
https://www.gsma.com/solutions-and-impact/technologies/networks/wp-content/uploads/2024/06/RCC.07-v14.0.pdf
https://www.gsma.com/solutions-and-impact/technologies/networks/wp-content/uploads/2024/06/RCC.11-v12.0.pdf
https://www.gsma.com/solutions-and-impact/technologies/networks/wp-content/uploads/2024/06/RCC.14-v10.0.pdf
https://www.gsma.com/solutions-and-impact/technologies/networks/wp-content/uploads/2024/06/RCC.15-v8.0.pdf
https://www.gsma.com/solutions-and-impact/technologies/networks/wp-content/uploads/2024/06/RCC.71-v2.7.pdf

Here are the old versions in case they are needed:
1.0:
https://www.gsma.com/solutions-and-impact/technologies/networks/wp-content/uploads/2017/07/RCC.71_v1.0.pdf
2.0:
https://www.gsma.com/solutions-and-impact/technologies/networks/wp-content/uploads/2017/07/RCC.71_v2.0.pdf
2.1:
https://www.gsma.com/solutions-and-impact/technologies/networks/wp-content/uploads/2017/09/RCC.71_v2.1.pdf
2.2:
https://www.gsma.com/solutions-and-impact/technologies/networks/wp-content/uploads/2018/05/Universal-Profile-RCC.71-v2.2.pdf
2.3:
https://www.gsma.com/solutions-and-impact/technologies/networks/wp-content/uploads/2018/12/RCC.71-v2.3.pdf
2.4:
https://www.gsma.com/solutions-and-impact/technologies/networks/wp-content/uploads/2019/10/RCC.71-v2.4.pdf
2.5:
https://www.gsma.com/solutions-and-impact/technologies/networks/wp-content/uploads/2024/07/RCC.71-v2.5.pdf
2.6:
https://www.gsma.com/solutions-and-impact/technologies/networks/wp-content/uploads/2024/07/RCC.71-v2.6.pdf

[webdingspowah]

This client claims to support RCS: https://github.com/vidit135g/Replify-Messenger

[foolishgrunt]

I rate that claim "unlikely."

There was a single release over four years ago, with no code activity since then. I think it's more likely that the dev forked QKSMS and wrote a "wishlist" (including RCS support) into the README, but never got around to implementing it. And I'm certainly not about to install an unknown app just to test it. :)

[ZethiaZ]

A maintained RCS compatible messenger would be killer, I'd donate for that.