How to improve iPhone battery life without buying a new battery?

How to improve iPhone battery life without buying a new battery? - 1

Step one: place phone on table
Step two: go outside

Once its run its course nothing else will matter assuming you have had it a few years. I think it goes something like 500 charges before it begins to drop, which is pretty good. Get a new battery put in at Apple store, its cheap and will be like a new phone again, or just trade in and upgrade if contract is up as the new iphone gets announced Sept 9