somehow my phone (gs 290) usage 100-150MB per day of mobile data I do not use cloud backup, only Nextcloud, and only on my own wifi network at home. But still the phone uses mobile data. When I check my Phone then “android-OS” seems use al of this data, so it is not any of my apps. What is eatin…

Update I just re-flashed my phone. First I went in to recovery and format system,data and cache. Downloaded the easy-installer, and flashed the phone. Looks like that solved the problem.