* ensure you don't have an adblocker blocking the domain `mtalk.google.com` it is required for GCM to work
* when using Titanium Backup first install the app only (without data) and start it, this will register the app, after that you can restore the data using Titanium Backup
* if an app is not shown as registered in microG Settings / Google Cloud Messaging, try uninstalling and re-installing it
* when restoring the ROM from a TWRP backup GCM is often broken, no workaround currently known
* when restoring the ROM from a TWRP backup GCM is often broken, no workaround currently known, except uninstalling and re-installing the apps
* Battery Drain
* microG fails to register applications to GCM (Google Cloud Messaging) if they were installed **before** microG, but the apps keep trying to register and that causes the battery drain, all apps installed **after** microG are properly registered, to fix the battery drain either
* do a clean flash of your ROM (, Magisk) and NanoDroid and install your apps after microG setup
Christopher Roy Bratusek
6 years ago