I've had this phone (Samsung Galaxy A71) for two months. I was just browsing the internet, when my phone restarts all of a sudden and I get a blue screen and an error message "This phone has been flashed with unauthorized software and is now locked."
I restart the phone and it seems to work fine but sometimes when I turn it off I get the same message. I'm concerned that I may have encountered malware that downloaded something onto my phone, but I checked in safe mode, ran antivirus programs, nothing. I haven't installed any custom firmware or downloaded suspicious apps. I tried to read up on how to fix it but I don't want to accidentally brick my phone. What should I do? I use this phone a lot and I'm very worried I'll try to start it up and it just won't work or someone's doing nefarious things with my information. Help!