Why doesn't my S3 mini screen light up?

[AC Question]

s3 mini screen doesnt light up

when i receive a txt msg the screen doesnt light up

 

[B. Diddy]

Re: s3 mini screen doesnt light up

Welcome to Android Central! This usually doesn't happen on most Android devices, unless you have a 3rd party app installed for that function. If you can't find a setting in the System Settings for this, then try an app like DynamicNotifications.