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Level 1

36 points

iOS 4 - battery drains much quicker after update

Has anyone else experienced this?

I know that multitasking should not affect the battery however, in a matter of 30 mins my iPhone 3GS used 35% battery, with no data intensive usage etc.

I never experienced this prior to the update.

iPhone 3GS 32GB Black, iOS 4, iPad 3G 16GB

Posted on Jun 22, 2010 9:39 AM

140 replies

ceebee37

Level 1

0 points

Dec 13, 2010 12:49 PM in response to AHJ

Yes, this is happening to me as well- since the update to iOS 4 my battery drains while the ipod touch is unused from 100% to unresponsive in a matter of a few hours.

Jan 19, 2011 3:40 PM in response to mlatto

In my phone the same occurs. In my case, it occurs if I make any eddition in the contacts when not connected (via wi-fi, 3g, carrier data), because my contacts are in the google contacts. When I do this, my battery runs out of charge in 8 hours. If I do not do this, the battery consumes an average of 18% a day.

Apr 5, 2011 7:24 AM in response to Laerciofig

It ***** that there is an issue with many of the upgrades. This has happened quite often to me. Each time, you have to hunt for the issue/program/apps that are now causing an issue and were fine before the upgrade. I have been upgrading the last 2/3 months in hopes that one will fix the battery life that got killed by an upgrade. Every morning, EVERY day, I wake up to 2 or 3% battery life and have to plug it in to get through the day.

Aug 22, 2011 8:45 AM in response to cmartinez

i think i found the issue causing my sudden battery drain. After i installed AirPlay my battery would not last overnight. When i turned off wi-fi all was fine. I think AirPlay must be pulling at wi-fi more therefore causing the drain.

Anyone know how to turn AirPlay OFF on the iphone? Closing wi-fi each night is a pain!

Ribbles

Level 1

0 points

Oct 27, 2011 5:14 AM in response to AHJ

The "problem" is that starting with ios4, WIFI is enabled ALL the time, not just when you are using an app that makes use of a wi-fi connection. This was done so that the device can receive PUSH updates from the internet even when the app is not being used. The unfortunate side effect of this is quick battery draining, especially on older devices that were not originally designed with "always-on WIFI" in mind.) The solution is to disable your wifi whenever you are not using an app that doesn't require it. Or just dont update past 3.x like me, but this leaves you unable to use newer apps.

iOS 4 - battery drains much quicker after update