iPhone, iPad, iPod Forums at iMore.com

[BLiNK]

found this article from last year where there are claims that the iphone 4 battery can last up to 38 hours. bull$hit

Battery Life on the iPhone 4 Lasts 38 Hours on heavy use. Yes, 38 hours!

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now i know there are a lot of factors involved due to usage but i just want to know how long does your iPhone 4 battery typically last?

i normally take mine off the charger about 6am and i'm good until about 8p - 10p

[ek9max]

Been about 12 hours today and I'm at 40%. But I didnt unload or website as much as usual today.

[BrindawithanI]

I easily get 8-10 hours a day, which I'm very pleased with. I would venture to say that "38 hours of heavy use" is a bit of an exaggeration.

[big9erfan]

Currently 16hrs standby and 6.5 hrs usage and at 49%

[Surfstoked]

Mine usually lasts around 12 hours, give or take a few, depending on how much I use it during the day

[JasonG]

Usually I can have it last over 24 hours, depending just how much i use it and what i use it for. I've only went one weekend without charging, I think it ended up near 30 hours standby, and lik 9 hours usage (was on wifi most the time, spent some of the time listening to pandora, which adds to usage time). Most the time i come home and throw it on the dock next to my bed so i don't stretch it out. I have had times where it was down to 5% 13-14 hours after I unplugged it

[ek9max]

I'm starting to think jailbreaking takes it's toll on battery usage.

[ImStrapped]

Im huge on gaming so my phone really don't last that long. 8 hour duration would be very nice lol

[Ipheuria]

My phone easily lasts over a day with my usage. The usual day I charge it when I go to bed take it off at 6AM and when I put it back to charge at 11:30-midnight it's usually at 60% or higher. I've slept over at the fiance's house which means it doesn't get charged and in the morning it's still around 50% I also don't use any of the battery sucking features push, location, notifications those are all off. My 3G is also permanently off at all times.

The Jailbreak itself has no affect on battery it's the apps you use with the jailbreak that make a difference. I've had better battery on my iPhone 4 with the JB.

[rwrife]

If I actually take the time to try (ie minimize use) I can easily go almost 48hrs w/o charging, otherwise (with moderate use) I can go 24 hrs. I have push data turned off and use Gmail over exchange w/ 30 minute poll intervals. The only apps w/ background notifications are Latitude and AIM.