I assume theres a day/night sensor for the screen brightness, mine doesnt always adjust properly. Anyone else have issues and know how to resolve them?

 

Have you updated to the latest software? That's the first step.

 

mine did the same thing.
It's been a while but here's what you need to do:
Go into your settings and uncheck automatic in the screen brightness screen.

 

 

Mine has done this a couple of times too.