Battery goes down incredibly fast after 3.0 update?

mine too. going to call O2...

been advised by O2 to fully reset/restore the iphone (which i did last night) and then to reset the network settings (which was done when i fully reset the phone last night) but i've done it again anyway.

another thing both myself and a work mate (whose battery is also quickly discharging) have noticed is that our phones are running hotter.

Same here. My battery life is terrible after the 3.0 upgrade.

Saw this phenomenon yesterday, very rapid battery discharge and a noticeable heat build-up in the phone.

So far this morning, after it has charged normally over night, it seems fine.

If this problem is a recurring one, it's likely an runaway app. Which one is another issue, last time this occurred I turned off PUSH .. PUSH was blamed as it constantly tried to get a response from a service that was not engaged ~ made sense at the time.

If it is Push that is causing it and you haven't added any new apps with fancy features, then it's Apple's program or OS at fault and they should hear about it and deal with it.

I too have a battery drain issue since 3.0 install yesterday and I have no push software except for Exchange mail.

Hi,

i got the same problem here. This phone came from the orange. the phone is 3 weeks old. After the upgrading, the battery life going down, its not enaugh for a night either. So i think something. And i tried everything. No running application, no 3g no wifi... but im just wondering, because before the upgrade, everything was perfect. The wi-fi runed all the time the push runed all the time, apps runed all the time and the battery was good enaugh for two days... so i think something is not perfect with this upgrade...

ah yes an other thing, its an orange iphone

and its extremely hot when i charge it

sometimes i think all of the bad thing from the the whole apple things, the company take and put it for only one box, and this box is the iphone... :((

I seem to remember when 3.0 was being given a public preview at an Apple event, there was some talk of Push and how it affects battery life on mobile devices. If I recall correctly (no guarantees here!) the device constantly has to be in a state to receive data as and when it becomes available, therefore the device has to maintain a constant 'listening' state - the consequence is that it needs to use more power to remain in this state.

Apple claims their implementation is more efficient than the Push implementations on competitor devices - they left an iPhone and another device (blackberry?) on Push, and the iPhone consumed less battery. But it would still have an effect on overall battery life. I noticed my battery was more drained than usual - I don't think my usuage was much different from a typical day, so I've tried turning Push off and set my Google mail to Fetch every 15 mins. I'll see how it looks at the end of the day.

Yes, my battery life was extremely poor after 3.0 update, but in my case it may have been related to problems with the AT&T 3G signal in my area. On the first night I went to sleep with the batt level at 85%, woke up the next morning (7-8 hours later) and it was at 18%. Last night the batt level was around 89% and this morning it's at 73%. I can only think of 2 reasons why it's better now. First, It was probably trying to find a 3G signal the 1st night and drained the batt but now 3G is ok so no more constant searching... or, maybe it was just an adjustment period while the new software got acclimated with the hardware. Not really sure, but I'm happy now.

To conserve battery power on your iPhone 3G since installing the 3.0 Software update, go into Settings and turn Push OFF.

Settings > Mail, Contacts, Calendars > Fetch New Data > Push

Turn Push OFF.

Fetch should be on Hourly.

That's it. The device will cool down and it'll stop chattering. Battery life will also significantly retain its charge.