Now i understand why so many people actually hates Apple, 3 months with this problem and i dont see any SOLUTION, i need to get rid of my iPhone 4S and get a Samsung Galaxy S3, i dont trust APPLE ANYMORE, very dissapointed, and stop posting useless solutions such as disable ANYTHING.
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My iphone4 has no battery life period. After this latest update the least bit of use runs it down to the point of being ridiculous . We have two iPads 1 , an iPhone 4s and my iPhone 4 . I was going to get a new iPad for Christmas ,but not now this is completely un acceptable. I've turned everything that makes the phone worth having off just to be able to have enough battery to use the phone. If something isn't done in the next couple of weeks I'm going to HAVE to get another phone , sadly not another iPhone . I can't keep paying the charges for smart phones that have to be rendered useless just to use the phone part. This needs to be addressed by someone from apple SOON.
I've been following this discussion for a while now and have tried many things mentioned with little success. This past Sunday I put my 4S in DFU Mode and then did a Restore from a previous back-up in iTunes while connected to my MacBook. When done, I drained the battery completely and then fully charged the phone. At 6:20 PM Sunday I was at 100%. At 6:30 AM Monday morning the phone was still at 100%. This morning, Wednesday at 6:55 AM the phone was still at 52%. Currently, at 3:21 PM the phone is at 37% remaining with Usage 3H, 15M and Standby 2Days, 20H. In the almost 1 year I've owned this phone, I've never had battery life as good as this and until recently, Usage and Standy were alway almost identical and the phone needed to be charged at least once per day. I'm a light user and everything is on except for Cellular, in General Settings which I keep turned off when I'm at home and on my network. When I leave home I turn it back on. I also have Push turned off in Fetch New Data. Looks like I'm easily going to get 3 days of Standby on the current charge. One only knows if the phone will revert back to its battery draining ways but for at least one charge the battery life has been pretty good.
It's really unacceptable, I've done all what it's suggested in this topic and this is the performance:
I have two iPhones with 4s, with iOS 6.0.1 10A523 the battery fails. With iOS 6.0 10A403 works very good.
Please!, a solution soon!!
A couple of interesting things:
iOS 6.0.1 on 3GS hasn't caused battery drain issues.
On my 4S, the problems I mentioned earlier would not go away despite trying a complete charge from empty and turning off various things.
Then, I tried letting battery go to between 10-20% and charged using an app called Sys Activity lite (free) (not sure of exact name but the app icon says SYS-Lite underneath it). It did a trickle charge at the end I think.
Now my battery life is looking fine - certainly as good or better than before the iOS 6.0.1 update!
So maybe the update has made various existing problems (such as a battery that needed maintenance charging quite badly) noticeably worse??
Just a theory- for now I'm just happy I've got it to a reasonable drain rate (so far).
Actually, I've done something similar.
Without resetting ANY, I simply installed 'Battery Doctor' (FREE) and let battery drained completely.
Allowed Battery Doctor to charge using the trickle charging method and now it seems to be holding up a good battery life.
Something to try, without having to reset all.
I was able to fix my problem by replacing the dock connector. This only applies to the people that have standby time and usage time that are identical (or almost identical) after hours of not using the phone.
Hours of googling led me to a hardware repair enthusiast site where a member was able to help me. The reason this occurs is because the phone thinks it is connected to a dock / charger even when its not. When the phone is in the state it will never go to "sleep". If you try to power down your phone and it resets instead there is a 99% chance you have a faulty connector. Keep in mind that there doesn't have to be any physical damage to your hardware. It is likely cause by subpar electronics (defective) that appple used in the manufacturing process. It is impossible to tell if the update increased the likelyhood of failure by changing the way the OS communicates with the connector or it is just a conincidence. It is certainly possible though since IOS 6 added support for the lighting connector.
I know this won't help allot of you but it may help a few. I did the repair myself and it is moderately difficult. I went from having 8 Hours usage , 8H standby overnight to only 8 minutes usage with 98% battery! And I would like to say to the Apple "genious" who told me it was normal that my battery drained 50% overnight to F-off!
If anyone wants more info on how to test for this feel free to shoot me a reply.