M series smartphone which do not support Goodlock can use nicelock from
playstore it will help.Check out NiceLock on Play Store:
I have been using sumsung super amoled for probadly 5 years,and now I am
sick of super amoled displays ,but After I used Redmi note 5 ,I felt
better for 10 minutes,then I felt something was missing,the darker
colors,the darker blacks,even the yellowi...