Cat S22 Flip external display notification for messages

The Cat S22 Flip might have RCS, but only the native messaging app on the Flip makes use of the external screen to display incoming messages. If you switch to the much superior Google Messages (with RCS support), then you give up external display support. So I had Ox Alpha & Claude collab on reverse engineering the external display API to create a simple app that can forward your Google Messages notifications (+ experimental support for all other SMS apps) to the external display, just like the native option. In my limited testing, it seemed to work fine. It consumes almost no resources and is easy to set up.

The APK:
Github

And the reverse engineered API, if anyone’s interested: (Ox Alpha tried it’s best to make it look good, now it looks like a high schooler tried to create a formal research paper in Word. Oh well.)
EXTERNAL_SCREEN_API.pdf (240.8 KB)

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Thanks! Source?

It’s not on Github, but gimme a few and I’ll try to make a repo

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The external screen goes completely white anyway at some point

I guess that’s a feature (broad messaging app display compatibility).

(I love how I had to tell Claude to use American standard spelling in the readme. Yes, it’s AI generated, I did review it, and I’m not putting in that much effort for this hobby project)

This forum is not reddit, no need to be apologetic for using ai

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No I mean there’s a glitch which causes the screen to turn completely white, idk what causes it. As far as I know even a factory reset doesn’t fix it. Its also not a hardware glitch

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If a factory reset doesn’t fix it, what makes you say it’s not a hardware glitch?

Cause I saw it go back to normal for a few seconds

…That still sounds like a hardware issue. Loose connector, maybe?

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Cool! I had my outer screen would start mirroring the main screen randomly and phone would have to be rebooted, back when I used a CAT. Outer screen seemed a little finicky to me.

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