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I uninstalled ABP completely but I can't get the icon off The top left corner? I have a Samsung Tablet S 10.5 inch screenscreen, I uninstalled ABP completely but the top left corner is still showing your icon, a small white circle with a squiggly line through it, like a yin & yang icon but all white. How do I remove it?

I talked to Samsung tech support for over an hour, we tried EVERYTHING, they said it's your icon & only you know how to remove this, I AM PRAYING I don't have to do a factory reset. I have a screen shot if you need it & I have rechecked the my removal process 10 times, looked everywhere, AM STUMPPED hoping you can help me plz...

The ABP icon does not look like the taijitu, but rather like a grey stop sign.

I suggest you to stop all background services, clear the cache of all apps, in storage. And also deleate Misc folder in storage.
after that, try switch off and on.