I'm a new user from Venezuela. Sorry for my english.
Recently I bought an i8190n for my wife, it came with android 4.1.1... after a week it begane to show the earphones detected and of course turns off the speaker and mic. The cell turns on the screen every 3 mins too.
I tried to use the three buttons combo and i didn't work. No problem, i used the adb command. Upgrade to 4.1.2 downloaded from Sammobile. But The cellphone keeps issued. Next I bring it to a technician, he changed the jack plug, and no change.
What could be the problem with it?? Any clue??