The original SMS/MMS Messaging app from AOSP
This is the original SMS/MMS Messaging app embedded in AOSP.
Source code: https://github.com/alperali/Messaging
This app is not considered stable at all. Please refer to the Readme at GitHub page above before attempting to make use of it.
You need to manually give Phone access permissions to this app from your Settings, if the app crashes right at the beginning.