Instead of the preinstalled "Launcher3" I'd like to use "Microsoft Launcher" – but when I choose it as default, it only lasts until reboot. After reboot "Launcher3" is again set as default.
How to keep a launcher after reboot?
Where are such things stored in general?
(Android 5.0.2 - API 21)
EDIT:
My Phone is a Medion X5004.
I tried via the settings menu in MS-Launcher, and via system settings.
EDIT2:
I tested installing "Apex Launcher" and set it as default - also resets to Launcher 3. So it doesn't seem to be specific to MS-Launcher.
EDIT3:
MS-Launcher does not sit on SD-card.
EDIT4:
Wiping cache has no impact...
EDIT5:
Tried to chmod 440 /data/system/users/0/package-restrictions.xml while launcher set to MS-Launcher - after reboot the file has write permissions again and Launcher3 "greets" me.