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Discuss Jailbroken battery life? at the iPhone 4 - Hackint0sh.org; for mail, i believe there are 3 modes: push, fetch, manual. Try using the manual ...
  1. #31
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    for mail, i believe there are 3 modes: push, fetch, manual. Try using the manual mode.
    In my case, I've always had it set at manual
    John


  2. #32
    Super Moderator Array Olethros's Avatar

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    Quote Originally Posted by unclemiltie View Post
    Just for yucks I decided to remove my exchange email since that is one of the push apps on my phone. Battery life IS MUCH better now and the background data transfer has slowed to a trickle.


    Any chance that the exchange server has gone nuts and is flooding the phone with requests? The reason I ask is that the phone was working fine, went crazy on battery life a while ago, then went back to normal for no reason, then has done it again.
    Yes there was a bug fix for exchange earlier in the iOS 4.x series where the phone would query exchange too often. Apple put out a special manual fix that you installed directly on the phone. Here is the link:

    http://km.support.apple.com/library/APPLE/APPLECARE_ALLGEOS/TS3398/DefaultEASTaskTimeout.mobileconfig

    I assumed Apple had fixed this (but I never personally had the problem despite using two exchange mail services)
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  3. #33
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    dtube and Olethros,

    Thanks for the help!
    I successfully downgraded from 4.1 to 4.0.1 using the method I described below after the battery drain nuked my carrier (AT&T) and turned my iPhone into an iPod. Fortunately, I also had an old backup from Sept in addition to my SHSH blobs, which restored many of my settings. What a pain it was to set up a new phone.

    I'm now operating again at 4.0.1, battery drain is "normal" which means I have to recharge about once a day in normal use for me. WHEW! I don't see any compelling reason to move to 4.1 and won't do that again until there is an acceptable solution for the battery drain issue. Good luck unclemiltie in finding a solution. BTW, the tutorials at hackthatphone.com are very informative.

  4. #34
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    @tympani,
    great.
    BTW, i think the problem you experienced was due to "restore iphone from backup" rather than "setting it up as new phone".
    Let us know
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    BTW, i think the problem you experienced was due to "restore iphone from backup" rather than "setting it up as new phone".
    Let us know
    Maybe I wasn't clear. When I did the upgrade to 4.1, I set it up as a new phone and had high battery drain and lost the carrier when it drained to zero. When I DOWNGRADED to 4.0.1, I used "restore from backup" and the problems disappeared. In my case (and unclemiltie's) 4.1 was a disaster. I'm glad to be back at 4.0.1. The 4.1 improvements are insignificant compared with the associated problems.


  6. #36
    kamilucky
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    I did my first JB my battery sucked bad until the very first full charge. Then for some reason it calmed down.

 

 
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