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Galaxy s4 virus?
I am having a really strange problem with my galaxy s4. I've recently been on a trip to Tunisia, and my phone has been performing flawlessly for around five months. Half way through my holiday I encountered a weird issue (used wireless in two different hotels), my down volume key and power button stopped working.
After pulling the battery out of the phone and rebooting, a message came up warning me that installing a custom OS can be dangerous etc. press volume up to download and volume down to restart. The volume down key still did not work, so I pulled the battery out and left it for half an hour, tried again and the custom OS screen still appeared.
I could boot the phone into safe mode, but couldn't get the phone to boot normally. I tried doing a format from within safe mode, but the issue still occured. I couldn't boot into recovery mode either so I decided to hit the volume up key to see if it was responding (during the custom OS stage), the button didn't respond the first few times, but after the third try, the download initiated. Convinced it was a virus I stopped it instantly via pulling the battery out, and tried to enter recovery mode again, this time it worked. So I formatted the phone again, and everything appeared fine.
Not long after however (a few hours) the buttons failed to work again, and after rebooting the same thing happened. So i followed the same steps (it appears starting the download and stopping it enables the ability to reformat), and once the phone was working again, I ran a deep file virus scan with AVG pro. No threats found.
After downloading only trusted applications (whatsapp, facebook etc.) I thought i'd hold off installing anything to see if the error occured again, but just now the buttons failed to work, and yet again the custom OS screen has appeared.
Do you guys think that it is an embedded virus? if so is there anything I can do about it like a low level format to try and delete the virus? or should I be looking at a warranty replacement.
Sorry for the long winded explanation, just trying to give the most information possible.
Thanks in advance!