My son has a unrooted Samsung J2-pro with androud 7. A third party app that I've uninstalled already, has changed the "system" notification sound to a silly song. I mean the notification that plays when I am receiving sth over wifi-direct (not the default notification of message or call). Any idea how to get rid of it without factory reset? Any help will be highly appreciated.
Please boot into Safe Mode and then try uninstalling the app.
To exit Safe Mode, simply reboot the device.
Hi, thanks for rapid respinse.
As mentioned already, the bad application has been uninstalled already and when I rebooted in safe-mode, I saw nothing relevant to that app to uninstall. The app has copied the audio file somewhere in system folders, I think.