Relax buddy.... I don't what the issue in your phone .....my device is also M series.....i do this steps nd my problem solved...... may be u should restart your phone once...... after that follw this method once again......nd also make sure that othe...

I also had a some problem....but thn i go in eye comfort shield and thn there is option ofset schedule thn set it on always on and after it turn on ....turn off if you don't have work with of it ...and after that it work properly....!!

I also had a some problem....but thn i go in eye comfort shield and thn there is option ofset schedule thn set it on always on and after it turn on ....turn off if you don't have work with of it ...and after that it work properly....!!

I also had a some problem....but thn i go in eye comfort shield and thn there is option ofset schedule thn set it on always on and after it turn on ....turn off if you don't have work with of it ...and after that it work properly....!!