Why has the battery icon on my iPhone 4 turned orange?

[iMore Question]

why has the battery icon on my iphone 4 turned orange?

the battery on my iphone 4 home screen used to be white. Now it is orange. What does this mean? Should I get battery replaced?

 

[Rob Phillips]

Re: why has the battery icon on my iphone 4 turned orange?

Welcome to iMore! You're in lower power mode. It's found under Settings > Battery.