Switching off automatic time-zone sensing in iOS 5 can improve iPhone battery life significantly, according to iDownloadBlog. The site claims that a bug in iOS 5's GM release causes the GPS-enabled location tracking connected to the automated time-zone function to run constantly. This unnecessary use of the GPS circuitry may drain the battery exceptionally quickly.

To fix the alleged bug and avoid the battery drain, 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 switch off "Setting Time Zone".

locationservices
It's not an official bug yet, though Apple is reportedly working on iOS 5's battery life issues. Anecdotal evidence suggests flipping this switch may significantly improve battery life.

Top Rated Comments

Macopotamus Avatar
126 months ago
Doesn't work, despite every tech website on the face of the earth claiming it does.

What DOES work is turning off just about every feature that is new to iOS 5. It's obviously just a bug that Apple will fix ASAP because the betas didn't drain like this.
Score: 11 Votes (Like | Disagree)
Tronic Avatar
126 months ago
Tried it last week and haven't seen it make a difference
Score: 9 Votes (Like | Disagree)
slicecom Avatar
126 months ago
iMessage too, anything else?
Turn on airplane mode. ;)
Score: 7 Votes (Like | Disagree)
room237 Avatar
126 months ago
I tried something this morning that seemed to help tremendously, i turned off the compass calibration. Havent gone below 90% all day.

What does this feature do? Don't we calibrate the compass by waving the phone around like a madman?
Score: 6 Votes (Like | Disagree)
bushido Avatar
126 months ago
i always love those suggestions:

turn off 3G
turn off wifi
turn off location service
turn off push nots
turn off weather

what u have left is a phone without any usefulness

here's an idea, turn off the phone. it saves u battery life :p
Score: 5 Votes (Like | Disagree)
Matthew Yohe Avatar
126 months ago
Yeah... I think this is magical thinking.

Just because the arrow is purple, doesn't mean "GPS IS ON RIGHT NOW AND I'M DRAINING ALL YOUR POWER! MUHAHAHA!" It simply means the service "Setting Time Zone" it's doing something with your location.

Furthermore, just because your location is "being used", this doesn't mean that your phone has to do any power hungry operation to obtain your location. It likely just looks at the cell environment that you're currently in which doesn't require constant transmissions to cell towers! I assume it's looking at the most recent cached tower information (within a reasonable time frame) and uses that.
Score: 5 Votes (Like | Disagree)

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