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Discuss bad battery life on iphone 3gs why? at the iPhone 3GS - Hackint0sh.org; i have the the following iPhone 3gs firmware: 3.1.2 baseband: 4.28.08 carrier: AT&T [ with ...
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    Question bad battery life on iphone 3gs why?

    i have the the following
    iPhone 3gs
    firmware: 3.1.2
    baseband: 4.28.08
    carrier: AT&T [ with iPhone plan]
    ps soon I will have tmobile as a carrier

    i notice that my battery live is not what it use to be, it does not last as long
    anyone has any ideas what this could be.
    thank you



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    Senior Professional Array bimmerme's Avatar

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    I found that to be the 3G. I turned it off and now my battery holds for 2 days with regular use with EDGE enabled. If I need 3G to surf the web or look up maps I turn it on.

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    Super Moderator Array Olethros's Avatar

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    Quote Originally Posted by bimmerme View Post
    I found that to be the 3G. I turned it off and now my battery holds for 2 days with regular use with EDGE enabled. If I need 3G to surf the web or look up maps I turn it on.
    Yes if you turn off GPS, push, 3G and bluetooth and turn down screen brightness the battery life of the 3G and 3GS is actually quite OK.

    3G is really not worth it for general web browsing.
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    Senior Professional Array bimmerme's Avatar

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    Quote Originally Posted by Olethros View Post
    Yes if you turn off GPS, push, 3G and bluetooth and turn down screen brightness the battery life of the 3G and 3GS is actually quite OK.

    3G is really not worth it for general web browsing.
    Right, but I said only 3G. I used to have push, BT, and brightness settings the same on my old 1st gen iPhone as on my new 3GS 32GB and battery consumption is the same.
    So again, the major battery drainer is the 3G. Bluetooth and push are nothing compared to the 3G.

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    Super Moderator Array n1ckn4m3's Avatar

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    Quote Originally Posted by bimmerme View Post
    Right, but I said only 3G. I used to have push, BT, and brightness settings the same on my old 1st gen iPhone as on my new 3GS 32GB and battery consumption is the same.
    So again, the major battery drainer is the 3G. Bluetooth and push are nothing compared to the 3G.
    I can confirm the same, both that my battery life is no longer what it used to be (and at less than a year from when I purchased it and obsessive/compulsive proper charging cycles, that is not expected), and the only change to my usage habits on the device are actually a decrease. As with any other toy, the more I have it the more it just becomes something I have -- so I'm not surprised to see my usage declining.

    I used to be able to unplug the phone in the morning, keep it in my pocket all day, and come home with between 65-75% of battery remaining unless i spent a lot of time talking on it. At this point, in the same location (same cell towers / area / zip code / etc.) and with the same usage patterns, I'm between 35% and 45% when I get home.

    Some have posited that this may be due to network changes that AT&T is doing to spread the load out that may be causing higher load to the baseband which would then result in decreased battery life, but no one has substantiated that and I'm not savvy enough with the technology to provide an educated opinion on the topic.


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    Super Moderator Array Olethros's Avatar

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    Quote Originally Posted by n1ckn4m3 View Post
    Some have posited that this may be due to network changes that AT&T is doing to spread the load out that may be causing higher load to the baseband which would then result in decreased battery life, but no one has substantiated that and I'm not savvy enough with the technology to provide an educated opinion on the topic.
    Different baseband firmware versions can optimize or reduce the battery life. Like AT&T tweaking their network it is hard to measure this.

    Push notifications started less than a year ago and have a small but noticeable impact on battery life, are you using these?
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    Quote Originally Posted by Olethros View Post
    Different baseband firmware versions can optimize or reduce the battery life. Like AT&T tweaking their network it is hard to measure this.

    Push notifications started less than a year ago and have a small but noticeable impact on battery life, are you using these?
    Negative--
    Never been a big fan of the technology since I noted it does kill the crap out of the battery life even if you're not getting notifications. I've had Push notifications turned off since they really started allowing them.

    It could just be wear on the battery, but it's difficult to tell. I wish the iPhone had an app like Android does that shows what percentage of the battery each system service / etc. did. It's always fun to see that 75% of my battery is eaten up by the screen on my DROID.

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    I also had this battery issue and what I did was never charge the iPhone for about 1 day after the battery is drained. Then, charge it directly from wall socket (not from PC or notebook) and notice the battery life can last about 20% longer.

    I'm not sure this will work for your iPhone battery. But, you can try if you have an additional phone.

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    I know the battery sucks, I turned off my locations and push notifications and all the others that wasted battery. I read somewhere that jobs said the best way to ensure battery life is to be careful with the cycles or charges. A first couple of times let it die and then fully recharge. After that the battery has about 400 cycles on it which he said should last you 2 years or so. After 2 years you are working with I think 80% capability.. Try not to let your battery completely die and then throw it on the charger for 20 mins. It's ok that the battery isn't completely dead and you put it on the charger, mine gets to around 35 40% then I charge it up. Every now and then I'll let if die completely and give it a full charge. Since I have started doing this I noticed I can go about a day without charging

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    Super Moderator Array Olethros's Avatar

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    Quote Originally Posted by Danman03 View Post
    I know the battery sucks, I turned off my locations and push notifications and all the others that wasted battery. I read somewhere that jobs said the best way to ensure battery life is to be careful with the cycles or charges. A first couple of times let it die and then fully recharge. After that the battery has about 400 cycles on it which he said should last you 2 years or so. After 2 years you are working with I think 80% capability.. Try not to let your battery completely die and then throw it on the charger for 20 mins. It's ok that the battery isn't completely dead and you put it on the charger, mine gets to around 35 40% then I charge it up. Every now and then I'll let if die completely and give it a full charge. Since I have started doing this I noticed I can go about a day without charging
    This is all correct. Once a month you should let it go flat completely and then recharge it.

    Also temperature is very important. Don't let the battery get too hot when charging, this limits its life. The battery will not last so long at cold temperatures but I believe this is a temporary thing and returning the battery to room temperature will restore normal operation.
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