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Reduce battery consumption on iPhone 2.0 phones iOS devices
I don't have the latest firmware (quietly released only when a restore is performed), but a lot of people have been complaining about abysmal battery life for the 3G iPhone (four to six hours). After a lot of trial and error, disabling push mail and only checking mail hourly has greatly improved battery life.

With wifi, Bluetooth, 3G, and GPS enabled, battery life is is more consistent with the first generation iPhone. A quick check of the Apple support discussion board reveals that others are coming to similar conclusions.

[robg adds: Disabling push email on first generation iPhones running iPhone software 2.0 should have similar benefits.]
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Reduce battery consumption on iPhone 2.0 phones
Authored by: vandozza on Jul 17, '08 08:02:44AM

It's also been suggested that turing off "location services" in Settings --> General --> Location Services greatly helps out with battery preservation.

I have not tried this, but possibly the GPS is trying to maintain a frequent/constant connection?



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Reduce battery consumption on iPhone 2.0 phones
Authored by: expanderz on Jul 17, '08 11:51:16AM

No, since this tip applies to the iTouch also.



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Reduce battery consumption on iPhone 2.0 phones
Authored by: maclick on Jul 17, '08 12:38:52PM

Yes before I turned off the location services it was pulling my battery life in half.



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Reduce battery consumption on iPhone 2.0 phones
Authored by: mgp@ravemac.com on Jul 18, '08 08:10:58AM

Location Services is the bridge between applications and GPS. It simply provides GPS data to your applications. It will not 'deactivate' the GPS.



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Reduce battery consumption on iPhone 2.0 phones
Authored by: Auricchio on Jul 17, '08 09:06:43AM

This comment is misleading because "2.0" refers to the software version. The 3G phone should be so indicated in the title, not 2.0.

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EMOJO: mojo no longer workin'



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Reduce battery consumption on iPhone 2.0 phones
Authored by: akuma-x on Jul 17, '08 12:47:21PM

I don't agree, as the 2.0 firmware update has impacted 1st gen iPhone users when it comes to battery life in a negative way as well.



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Reduce battery consumption on iPhone 2.0 phones
Authored by: blubbernaut on Jul 17, '08 04:41:08PM

Exactly what are "Location Services"?

I don't have an iPhone *sob*, but I'm sure I've seen this in the arcane menu system of my current phone...



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Reduce battery consumption on iPhone 2.0 phones
Authored by: Auricchio on Jul 17, '08 04:45:59PM

I believe Location Services is the automatic reporting of your location when you call 911.

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EMOJO: mojo no longer workin'



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Reduce battery consumption on iPhone 2.0 phones
Authored by: mgp@ravemac.com on Jul 18, '08 08:06:51AM

Location Services allow applications to use GPS to amplify them. An example would be allowing the iPhones camera to provide location data that can be added to the picture, known as geotagging (here is a picture of a bridge and this is where I am when I took it). Other examples of Location Services (or location based services) would be; turn-by-turn navigation, real-time traffic updates, finding the nearest restaurant, and locating people on a map displayed on your iPhone!



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The manual states this as well
Authored by: mgp@ravemac.com on Jul 18, '08 08:24:08AM

Well, according to the Apple iPhone manual, for both the 3G and Edge models, turning off Location Services helps with battery life.



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