On some phones, like for example ..peria LT30p at certain settings, the "auto adjust screen brightness" just does't work correct.
You can extend a bit the battery life with simple Auto Brightness Control APP.
![Take Complete Control Over Screen Auto Brightness - Samsung Galaxy Note 2 [How-To] screenshot 2](https://i.ytimg.com/vi/y536omvn6_A/mqdefault.jpg)
9Apps 4.9
