I am being serious! I had to 're cut my screen protector and as I had dropped my phone I must have knocked the sensor, when I slapped it against the table it worked again! Try a app called androsensor to check the sensor in case the other app is wrong, it should either say 0 or 2
Sent from my U9200 using XDA Premium HD app
Sent from my U9200 using XDA Premium HD app