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A possible fix for the iOS 5 battery issue iOS devices
It seems the battery issue can be resolved by turning off the automatic detection of timezones switch. See this article, which is in German, so you may need translation software.

[crarko adds: Not having an iPhone 4s, I haven't tested this one. My understanding is that there are bugs in iOS 5 that are responsible for the short battery life and an update is in the works. While waiting for that, this does seem like something very safe and easy to try out. If you do, please let us know if it helped.

Note: as noted in many comments, this is not an iPhone 4s issue specifically, but affects devices running iOS 5 in general. I've changed the title of the hint to reflect this.]
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A possible fix for the iOS 5 battery issue | 16 comments | Create New Account
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A possible fix for the iPhone 4s battery issue
Authored by: macbates on Nov 03, '11 07:46:16AM

The battery drain issue is an iPhone iOS5 issue, and is not specific to the iPhone 4s. I have battery drains issues on a 3GS (drains in 6 hours on standby), but no issue at all on an iPad. The time zone detection setting does seem to have fixed things, including the 100% CPU utilization on the iPhone.



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A possible fix for the iPhone 4s battery issue
Authored by: aca on Nov 03, '11 07:56:56AM

Not just iPhone 4S my iPad1 had incredibly terrible battery life after the iOS5 update, and I soon discovered that with automatic time zone setting enabled, it had location services running constantly, 24/7. Switching it off restored the battery life to its previous reasonably good length. Took it in to a Genius bar the next day, and they saw that it wasn't right, but didn't have any suggestions.

It must have something to do with a preference of some sort, possibly inherited from iOS4(?), because I have *not* had this problem with my 4S (which came with iOS5 installed, and the settings were restored from an older iPhone running 3.1.3). At any rate, it sounds like they've figured it out...



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A possible fix for the iPhone 4s battery issue
Authored by: Mike Perry on Nov 03, '11 08:08:36AM

This seems to be a flaw in the design. As a cell phone, an iPhone should always know what cell tower it's locked on. That should, in most cases, tell it what time zone it's in. And if that cell tower hasn't changed, there's no reason to keep doing whatever it's doing to spot a time zone change.

If fact, one useful kludge would be to set the time zone on startup or whenever a user exits Airline Mode. That's when they're mostly likely to have just crossed time zones. Other than that, the time zone could be left alone.



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A possible fix for the iPhone 4s battery issue
Authored by: tjdraper on Nov 03, '11 08:10:36AM

I had this problem on my 4S for a couple days when I first got it until I discovered this location services bug. It was causing massive drain during stand by time. I noticed that locations serves icon was always on in the top information bar, so I hunted for what was using it constantly in the location serves settings, saw it was always being used by "Setting Time Zone," flipped the toggle to off, and my battery life has been fine ever since.



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Not only the iPhone 4S
Authored by: ScooterComputer on Nov 03, '11 08:30:43AM

I think we should stop pairing "battery problems" and "iPhone 4S". From all indications (including Apple's own) and my personal results with my iPhone 3GS, this problem is with iOS 5 and iPhones (all of them).

My battery life on my 3GS has been dramatically shortened, and I've already disabled the Time Zone Location Service (did that right away, couldn't understand why it didn't ever turn off). I think the problem is with Push Notifications and cellular devices, since my WiFi only iPad has -not- seen a similar loss of battery longevity. The only difference on my 3GS is iOS 5, obviously, and that Push Notifications are by default globally enabled. (Under iOS 4 I always kept Notifications 'Off' and set the Fetch schedule to 'Manual'.)



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A possible fix for the iPhone 4s battery issue
Authored by: pheed on Nov 03, '11 09:29:50AM

I have had this feature turned off almost since the beginning. I travel quite a bit for work and shortly after I bought my phone, I took it with me. When I turned Airplane Mode on, I noticed that the Location Services arrow appeared - which I thought was odd since no wireless services should have been running. I found that the Location Services arrow was being triggered by this Setting Time Zone feature. This seems somewhat redundant considering the "Set Time automatically" feature. So I turned the Time Zone feature off.

Additionally, I turned off the Local Weather feature on the flip side of the Weather app. Most of the time I'm in my home city. I should only need to turn that feature on when travelling.

After turning those features off, I noticed that my battery life was very respectable. It's not unusual for my battery to last nearly 48 hours on a full charge, with light use. I had been perplexed by all the complaints of poor battery performance on the 4S. Now I know why!

---
E-mail me: moc.em@spillihp.tc



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A possible fix for the iPhone 4s battery issue
Authored by: dpmcintyre on Nov 03, '11 09:40:29AM

I've already tried that on my 4S. I still only get 48h of standby with very little talk time.



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A possible fix for the iPhone 4s battery issue
Authored by: pheed on Nov 03, '11 10:40:51AM

48 hours of standby is pretty good in my opinion. That was about the average time I saw even on my 3GS. Unless you're cranking the phone's settings down to near-unusable levels and rarely using the phone at all I don't think you'll see much better battery performance.

---
E-mail me: moc.em@spillihp.tc



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A possible fix for the iPhone 4s battery issue
Authored by: morespace54 on Nov 03, '11 09:44:16AM
If you don't speak German or don't want to use a translator (it's all over the web), you may check here, here or here (and a lot more places if you Google-it).

Basically, the best trick seems to be about enabling the location icon (in the status bar) and see if it keeps running all the time (the icon should turn off when nothing is using the location system).

  • Head to the Settings app in iOS 5 and tap Location Services and then scroll to "System Services" at the bottom of that window then enable the "show icon on status bar" at the bottom.

A lot of people found that the detection of time-zones option was running all the time (and some didn't). Worth a try.

Of course, to help the battery, you can also check and disable Bluetooth, WiFi, iCloud backup, and Apple Stock widget if/when you don't use them... Your choice.

And as mentioned above, even if Apple didn't acknowledged the issue, it seems to be more related to iOS 5 than the 4S specifically (as some iPhone 4 owner had similar issues since upgrading to iOS 5).



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A possible fix for the iPhone 4s battery issue
Authored by: rbsandkam on Nov 03, '11 03:05:40PM

We just today received this message from our campus email administrator with regards to IBM Lotus Notes Traveler, which is the Exchange/ActiveSync interface for communicating with our campus IBM Lotus Domino servers using an iOS device:

A special note about the new Reminders feature in Apple iOS5 - Some users are noticing a quicker battery drain following the upgrade to iOS5 on their Apple device. Lotus Notes Traveler does not yet support the Reminders feature, so creating a Reminder list will cause constant polling and drain the battery. We suggest this be turned off. To do this, navigate to Settings Mail, Contacts, Calendars IBM Lotus Notes Traveler for Reminders OFF.

I have not yet upgraded to iOS5, so I can not test my theory, but I wonder if the same problem exists for Google accounts that are being accessed via Exchange/ActiveSync (as opposed to IMAP).
If Reminders is listed in the settings for your Google account, I would try turning it off.
Again, This is just a theory. I have not yet tested it



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It's be nice to have terminal
Authored by: kd4ttc on Nov 03, '11 03:56:43PM

If we had the terminal app available we could just run tops.

---
Steve Holland



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My iPhone 4 experience with ios 5
Authored by: gxw on Nov 03, '11 05:52:57PM

Had bad battery life after upgrading to IOS5 and migrating to icloud.
Before migrating to icloud the battery life was acceptable or seemed to be.

Did a restore last night.
Turned most of the icloud features off.
Turned off push on all accounts.
Set pull to manual on all accounts.
Turned off most location stuff.

Yesterday, before restore, I returned home with 30+ % battery. (made and received no calls yesterday)
Tonight I returned home with 96% battery left.

Before the restore I did turn off the timezone setting. This seemed to make no difference in batt. life.
On the iPhone 4 it's either the push/pull stuff or iCloud. I suspect it's the latter.

Notes:
I always have WiFi turned off.
I prefer no push or pull. That way the phone only retrieves data when I check it. (Works for me, YMMV). Drawback is I miss the occasional meeting reminder.
The register.co.uk had an article yesterday saying that a batt life beta patch has been released to developers.



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A possible fix for the iPhone 4s battery issue
Authored by: zooids on Nov 03, '11 06:16:29PM

I've found force quitting "Find My Friends" has significantly increased my battery life. At the end of day, my battery used to be about 20%. Without Find My Friends, it's usually about 60%



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A possible fix for the iPhone 4s battery issue
Authored by: msg007 on Nov 04, '11 12:13:08AM

My battery life has been fine on my iPhone 4. I did turn off the time zone support feature because it was always looking for my location.

I did notice though that when I setup a GPS reminder, my battery was getting hit pretty hard because every time i would check my phone, it was looking for my location.

Hopefully the fix works and will be available before December. Now if they can just launch iTunes Match already...



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A possible fix for the iPhone 4s battery issue
Authored by: benbot on Nov 04, '11 08:50:36AM

"Of course, to help the battery, you can also check and disable Bluetooth, WiFi, iCloud backup, and Apple Stock widget if/when you don't use them... Your choice."

I agree with all those things EXCEPT WiFi. I see battery life complaints all day everyday and see that people have been instructed to turn off WiFi. I definitely agree to turn off the option to Ask to Join WiFi networks because that means the phone is constantly scanning for unjoined networks, which eats battery. But if you turn off WiFi altogether, that means the phone has to do all internet/location-based tasks over 3G vs over WiFi, which KILLS your battery. Turning off WiFi seems to have somehow gotten into people's heads as a way to help battery. Unless you want to not be connected to the web altogether (like Airplane Mode), doing anything over WiFi is way easier on the battery than 3G.

Sorry to pounce all over a small detail, but I want people to realize that misconception.



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A possible fix for the iOS 5 battery issue
Authored by: david7z on Nov 11, '11 12:11:45PM

Fortunately, I didn't have battery problem after upgrading my iPad to ios 5,
but I did after upgrading to ios 4.3.x

The symptom was the same, loss 10% battery per hour when it's idle.

I solve it by restoring it to factory setting in iTune, then reinstalled apps that I need.
The battery life become normal after it.

I hope it will help.

Good luck!



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