href="http://brandbattery.com">Brand Battery</a>: The battery living of the iPhone has to be one from the biggest complaints and throughout heavy usage, typically e-mail synchronisation and utilizing the mobile phone, you may possibly get 3 or 4 hours max. When I know I will be employing the telephone heavily, I slip into conservation mode applying the following techniques. This is typically at a conference or when I know I will not get to charge for a day or two.

This will extend the existence for another couple of hours which helps get through the day!

Turn sound off -If the cellular phone has to make a noise or vibrate, it's using battery existence which you desire to conserve. So turn it off.
Don't listen to music. If you'll need your telephone for e-mail or other work purposes, don't deplete the battery just listening to music
Change E-Mail to manual - If you've your iPhone configured to push e-mail down to your cellular phone real time, turn this back to manual to conserve battery living. Do a manual pull of mail when and if you will need it.
Set Autolock to 1 minute. The longer the screen is turned on, the a lot more it uses the battery. You can of course just put into sleep mode quickly right after use as well.
Turn Bluetooth off when you are not utilizing it.
Lessen the brightness as far as you possibly can without compromising your eyesight.
Turn Wi-Fi off in case you usually are not employing it as that is a big battery drain.
Turn 3G off and use the slower speed GSM settings if mobile data speed isn't an issue for you.
Turn off Location Services. You know where the cellular phone is!
At least once a week try to run your battery entirely down anyway, then recharge your iPhone to 100%. This will keep your battery in excellent condition.

Have a look on <a href="http://batteryextender.net">Cell Phone Battery Extender</a> for further tips to appear soon after your iPhone.