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Samsung Galaxy S7 Edge System Error Message

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Senior Member
Apr 13, 2016
OnePlus 8T
Hello there. So today for some reason I've got a message from Device Security saying "Unauthorized actions have been detected. Restart your phone to undo these actions."

I did restart my phone, by tapping the restart option on the screen. It turned off, went to a blue screen, restarted and the message kept popping up..
I also tried to factory reset the phone, still no luck.

Has any of you went through this? Or found a way to revert those "Unauthorized actions" ?


Senior Member
Oct 26, 2015
Okay, try to install twrp, do a full twrp backup (=nandroid backup) and then install Lineage OS. Full tutorial here : https://www.youtube.com/watch?v=a8-ISL3gM_s
Hope it will solve your problem. Twrp backup is usefull, so you can restore your data in lineage os using Titanium backup.
You also can try to wipe every partitions in TWRP except /sdcard and reinstall os via Samsung Kies
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