iPhone battery life help.

[MeRkAgE]

Ok well my original iPhone's battery life doesn't seem to be that strong.
For example, i will keep my iphone on for most of the day, then play a few applications for about 10 minutes or so, then it will drain ALOT of battery.
How can i improve the life? I am currently Jailbroken and unlocked on 2.2 software, and i use themes sometimes on my springboard.
+rep for helpful and not obvious answers.

[blanky12!]

Ok well my original iPhone's battery life doesn't seem to be that strong.
For example, i will keep my iphone on for most of the day, then play a few applications for about 10 minutes or so, then it will drain ALOT of battery.
How can i improve the life? I am currently Jailbroken and unlocked on 2.2 software, and i use themes sometimes on my springboard.
+rep for helpful and not obvious answers.

I think themes could drain the battery quite a bit, as I have a 3G and my battery is horrid when I use themes.

But what you can do is re-lock the phone, get it unjailbroken by restoring the origanal software on the iPhone and attmempt to take it back to apple and see what they can do about it.

[MeRkAgE]

I understand but i just don't wanna risk restoring it, and being unable to unlock it again as i recieved the phone unlocked from the previous owner
Is unlocking fairly simple to do?

[blanky12!]

I understand but i just don't wanna risk restoring it, and being unable to unlock it again as i recieved the phone unlocked from the previous owner
Is unlocking fairly simple to do?

Yes, download quickpwn and you should be sorted.

[Recursion]

I fail to see how themes would drain the battery, after all its just REPLACING images.

How often do you reboot it?

[MeRkAgE]

I reboot it all the time. It sometimes crashes etc.
I want to get rid of Installer and keep Cydia, but i doubt thats possible.

[Juelz]

i had an iphone & i always take my phone places but the battery always went so i switched phones cos it was so annoying

[blanky12!]

i had an iphone & i always take my phone places but the battery always went so i switched phones cos it was so annoying

You should've gone to the genius about this. Turning off 3G service on the phone also helps a lot - If your in an area without 3G then it's pointless.. It'll constantly ping the tower for the 3G signal.

[Recursion]

It doesn't "ping" it. It will use more power to keep searching and holding onto 3G signals for as long as it can

But yeh, as Nick said, turning off 3G will DEFINITELY increase battery life A LOT, also A-GPS if that can be turned off.

[MeRkAgE]

Im using an iPhone original, the "2g" one as people call it.
I don't think you can turn GPRS off?