Hey. I am using Galaxy S4( Model No. SGH-I337m) its LCD colour is getting dark day by day. i dont know why. i use it only 9 months Hardly condition is 10/10. I dont know what to do.
It may be a problem with the brightness setting. Are you on auto-brightness or manual?
Are you having to increase the brightness to compensate?
Wiping the Cache Partition may help.
If not, a Factory or Master Reset may do so, but note that the phone will be wiped, so back up your personal data first.