Samsung galaxy note 4 screen

[Tyler7411]

Hey just wondering if anyone else is have the same problem as me I have my note 4 sm-n910f about 3 months now and the screen on the top right hand corner of the phone where the front facing camera is starting to lift up away from the body I have never opened it up or had to replace the screen but I have flashed the phone to cm 12 will this void my warranty way samsung if I send it away to get fixed??