iPhone how to extend battery

Buy a battery extender device and plug it in.

Also don't install too many jailbreak apps.

Turn it off.

Create a double battery by soldering two regular batteries in parallel and then creating a new back to accommodate the larger battery.

la321 said:

how do i extend my battery life on my iphone 4s?

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Don't allow you iPhone to get wet.

Applejuiced said:

Buy a battery extender device and plug it in.

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this.

keep it plugged in...