My battery on my iphone runs out in 2 to 3 hours. What to do?

The first two or three times, don't look, but normally, when you use a 1 A (1000mA/h) charger, within 4 hours. I don't like to use the iPad charger that can deliver 2 Amps, because it will heat up the battery. And the wormer it gets, the sooner you need a new battery.
But, if you want to find out the quality from your battery, just visit the genius bar in an Apple store. They test it for free, and also can point out if there is an app consuming too muck power. I went in with my iPhone 4 and they found an older firmware version. They put in a newer firmware (not the iOS) and since then it is running 2 or 3 days with one charge, with a 4 years old battery. Before I went in, the battery would drain in less than 6 hours.

My iPhone 5s 64GB battery life is not much better than my 4s 64GB battery life, but considering that the 5s is much much faster than my 4s I guess that's pretty impressive.

go and have the battery changed :)

The iPhone 4 has a limited number of charging cycles. The battery in the iPhone 4 is a older type of battery that does not keep well depending on the environment you live in. iPhone 4 is in "end of life" status with Apple and is no longer provides support. There is many cellular stores that will change the battery for $25. The replacement battery's are often better than the ones provided by Apple.

Once you purchase the iphone,dont use it yet.Instead of using it right away,kindly charge your IPhone with the wall charger for 3 hrs.Please dont use the Iphone while charging.Kindly check always if the battery is full.Once its fully charged then that's the time that you can use the iPhone. Once fully charged, let the iPhone's battery fully drain.Please keep the iPhone off for 2 hours.Fully charge your iPhone and allow the battery to rest in the fully charged state for two hours. (You may use your iPhone during this time as long as the iPhone is plugged in).Repeat the third and fourth step a maximum of three times if you feel your battery indicator is inaccurate.

Here are some tips for your everyday charging for your IPhone:
#1 - Charge your iPhone throughout the day when available. Charge EVERY night, regardless of charge level. This will keep your battery active, which is healthy for the iPhone's battery.
#2 - Use a wall charger or car charger w/ rated output 5V 1A. Computer chargers might not charge when the computer is in standby mode.
#3 - You cannot overcharge your iPhone. You don't need to disconnect the iPhone from the charger after it's done charging. Once fully charged, the iPhone will run strictly off of AC power and will not damage the battery.
#4 - Every two months, make sure you fully charge and fully drain the battery, in one cycle. This calibrates your battery indicator. If you fail to do this, your indicator will become inaccurate. Calibrating your battery does not improve battery life.
#5 - If you ever need to store your iPhone for any reason, make sure your battery is stored @ roughly 50% and in a cool environment.
#6 - Always charge your iPhone out of its case (assuming you can easily remove the case). Charging your iPhone inside your case will make the iPhone hotter, which is bad for the battery.
#7 - Charge your iPhone in a cool location. Charging your iPhone in a cool environment has a tremendous impact on your battery's lifespan. The colder the location you use to charge, the more charging cycles you can complete without your battery deteriorating. Avoid charging in direct sunlight.
#8 - Use properly rated chargers. Using chargers that are not properly rated will have a huge impact on your battery's lifespan. Make sure your car charger has the same rating as the official Apple charger.
The official Apple wall charger is rated as follows:
Input: 100 240V ~ 50/60 Hz 1.0A
Output: 5V 1A
Thanks!

that's because your using GPS signal that is constantly resetting itself and it uses battery life to do so, GPS uses more energy than anything else the iphone will do. If your still within hardware warranty call Apple and they might help you with it

you should try turning your wifi off, and disable 3g

if you dont know how; just go to settings, general, then network. you'll see the option to disable Wifi if its enabled, as well as 3G. If you have 3G enabled, your iphone will die within 5 hours!! You can tell if your phone is on 3G mode by looking at the top left of it next to your signal bar, and see if there is an "E", a signal strength bar (Wifi), or an E, which is just the standard At&t network that takes less juice to run.

Try it lol

This is a really good article that will take you step by step through the settings that will best optimize your battery life. And if this doesn't help you should make an appointment at your local Apple store, they are always very helpful (at least in my experience).
http://www.apple.com/batteries/iphone.html About iPhone BatteriesLearn how to maximize the lifespan and battery life of your iPhone.

because one of them its got default lion battery in terms of you need to exchange it or buy a ne w iphone unless you take it to apple and says whats happening sorry