Myself having had to search around the forums and online for workarounds and solutions, I figured it might be a great idea to have a single forum post where people can share workarounds they’ve found for various issues or tweaks. Feel free to share below or link to a reply on a different forum thread that resolved an issue you had. Just add a note before the link saying what it is and what it does.
So far I’ve disabled autosuspend for the modem so I no longer get disconnections (works great so far):
echo 'on' | sudo tee /sys/bus/usb/devices/1-1.2/power/control
And I just disabled call waiting in the modem so that incoming calls no longer cause the audio to drop in a ongoing call (still waiting to see if this resolves the issue):
mmcli -m any --voice-disable-call-waiting
Limit battery voltage while charging (And note about software bug that causes overheating during charging): How to limit battery charge voltage and current - #12 by twiggy