5 days is impossible on my 3G S.

Seriously,
your phone won't even last for a day, if you

- make calls
- SMS
- email
- iPod (1 hour)
- Safari (1 hour)
- read news (NY times, AP mobile, ESPN, Eurosport)
- play games for a while (Bejeweled, Pinball, TTR 2)
- Facebook, Twitter, FML
- Dictionary

I end up with my phone having around 20% every evening.
The same thing happens on my friend's 3GS as well.

Because I don't bring my charger out? Hmm...

Anyway I heard that there's a charger-like mini-device for iPhone/iTouch
where you can use its battery when you connect it to your iPhone

Exactly.
Assume a person uses merely 30% of his iPhone's battery everyday.
He will need to charge like thrice to complete one cycle.
That is, 3 days?

Also, the manual stated that the battery life will fall to 80% after 300/500 charge cycles (If not mistaken)
So if a person consistently uses 1 charge cycle everyday,
His battery will start deteriorating after hmm, a year or two?

Its time for an iPhone 3G SS then. LOL.

It makes no difference on old iPhones
the reason why new 3G S are facing short battery lives are because they are new
After using for some time it will be better.

The same thing happens to my iPhone 2G.
And now its standby time is like damn long!

It would be perfect on an iPod or a Mac.
iPhone's overhead is higher as it has the phone functionality.
I can't confirm about this.
But this is what I learnt from my previous iPhone.

When you first get your phone,
Try charging it full and using the battery completely and full charge it again
I saw this in other forums where they call this battery recalibrating
But we shouldn't repeat this method too often,
Just once in a few months.

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Added on September 1, 2009, 10:34 amLeave it since 2.2.1 may not have some features that you need?

2.2.1 and 3.0 doesnt differ a lot in the battery consumption,
Unless push notification is enabled.

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Added on September 1, 2009, 10:37 amNo one but yourself know how much have you used in this 8 hours.
If you just make a few calls and SMSs without using any other apps
And you need to recharge after 8 hours then its not okay.

This post has been edited by fuiyo: Sep 1 2009, 10:38 AM

Settings > Notifications > OFF

Don't lie to yourself.
Well I did that too. Haha!

My battery is much better on my iPhone 4 compared to 3GS.
As Apple had claimed, 40% better

You enabled your 3G all the time and it lasted for 5 days?

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Added on October 10, 2010, 6:46 pmYours is pretty normal since your usage is low. Did you enable 3G all the time or you enabled it only when you wanted to use it?

This post has been edited by fuiyo: Oct 10 2010, 06:46 PM

Yours is quite good and reasonable.
I still doubt that the person above who enabled 3G all the time could get his phone to last for 5 days

Those don't affect much. I have friends who did the test before. They failed to reach 5 days. Maybe he lowered the brightness like A LOT? Hmm...

With all the WiFi, notifications, locations services and Bluetooth disabled, and the brightness set to half (default), my 3G drained 6% of battery after using Facebook and Twitter for almost half an hour, and I haven't use safari nor play music yet. I wonder how users can use less than 15-20% per day by enabling 3G. Sigh, one can't really play games for long without charging it.

Do you fetch mail?