How to improve iPhone bettery life???

[eyemakerz]

​Hi,
I m worried about my iPhone bettery, anyone know how to improve my iPhone bettery life?

 

[thunder999]

Link, try looking in the FAQ section next time.

 

[EWyatt]

​Hi,
I m worried about my iPhone bettery, anyone know how to improve my iPhone bettery life?

OK.
First off, what iPhone do you have? What iOS? And, what is your battery life like in terms of hours and usage?

 

[eyemakerz]

OK.
First off, what iPhone do you have? What iOS? And, what is your battery life like in terms of hours and usage?

I have iPhone 4 and I am using OS4, I want to know in term of usage.