My iPhone 5 Auto Brightness button is missing, how can I get it back?

[iMore Question]

iphone 5 Auto Brightness botton is missing

i tried reset, updated to IOS9, even i'm unable to get the auto brightness button in my iphone5. Anyone please help me through this.

 

[HankAZ]

Re: iphone 5 Auto Brightness botton is missing

i tried reset, updated to IOS9, even i'm unable to get the auto brightness button in my iphone5. Anyone please help me through this.

In iOS 9, it's under Settings > Display & Brightness