Ios 6.1.2 is still having battery life issues on iPhone, anybody else having battery drains?
iPhone 4 (8GB), iOS 6.1.2
Yea, I am having the same problem. In three hours my phone went from 100% battery charge to 19% and I wasn't even using it, it was on sleep mode in my locker at work.
I'm not convinced it is an Email problem. I've had all my account link to my iphone, including 2 exchange before the update and never had the battery drain. Never had the issue until update 6. I've killed every process, drained the battery, recharged completely from the wall, turned off all services, background processes, PAN hardware, WiFi hardware, cellular data, 3G, reinstalled the IOs and restored the iphone like every discussion claims to be the problem but no success. How is the iPhone draining with almost no processes running? Didn't reinstall any applications. I'm not even using the phone and it is still warm with rapid drain. I'm only fortunate to have an andriod for backup to make a phone call because after a few hours Iphone is dead completely when it was on standby. My iPhone is now just a paper weight until a patch or hotfix is available. Does anyone have a working solution? Thanks.
This was my lab all day:
Standard Config with 4 mail accounts (exchange, gmail, hotmail and icloud) and push enabled:
7:00 AM -> 99% battery
9:36 AM -> 47% battery (1% lost every 1,8 minutes)😢
Disable push and set Fetch every 15 minutes:
9:36 AM -> 47%
11:00 AM -> 39%. That was working! (1% lost every 10,3 minutes)😎
Then i charged the battery phone again to 99%, reboot the phone (On+Home) and enable push:
3:59 PM -> 99%
4:45 PM -> 89% This was better than the first state but not a good time (1% lost every 4,8 minutes)😮
Remove Exchange and reboot the phone:
4:50 PM -> 88%
5:24 PM -> 78% Worst! (1% lost every 3,4 minutes!)ðŸ˜
Remove all the mail accounts, reboot (again) and reconfig all the accounts:
5:52 PM -> 73%
6:31 PM -> 67% (1% lost every 6,5 minutes) Not the best, but better. 🙂
I estimate that the final config have 10-11 hours of battery on standby
The best config without push can make 17 hours.
All the lab was executed with an iPhone 4S and the 6.1.2 version
The conclussion: Push is the responsible
you seem to know a lot, but you are very wrong in this case. This battery drain issue is directly related to recent IOS updates, it's documented all over the place and even acknowledged by Apple, that's why they released 6.1.2. I had battery drain on my iPad with 6.1.1, 6.1.2 fixed it. However now my iPhone, which was previously unaffected by 6.1.1, but upgraded to 6.1.2, is now draining battery in standby 10-15% every 20 minutes.
The only way i found to control the problem was disabling push or remove all the Mail accounts and recreate it until Apple release a solution. The fist way is better than second.
I know you thing that somehow this case is different and it really IS 6.1.2. If it is, however, why is my battery life unchanged with 6.1.2? And what about all of the people in these threads and messages over the past 5 years who just KNEW that the problem was whatever version they had just upgraded to?
Here's a list of complaints similar to your going back 5 years:
iPhone 4S 5.0.1 Update Improves Battery w/ Settings Reset
iOS 5.0.1 - Made my iPhone 4S battery performance worse!
What happened to the battery fix? I have been waiting for tech help since 5:33pm
Battery draining and phone warm
iPhone 4s Battery problem maybe found!!
iPhone 4S battery issue detected (really)
Battery Draining much faster on 4S, what can I do?
Battery Meter/Life Problems with 4.0.2
4.0.2 guzzling my battery. Your's too?
Battery runs out very quicky in iOS 4.0.1
Battery nearly nonexistant after 4.0 upgrade
Dead battery after few hours on standby using 4.0 software
3.1.3 upgrade - shortened battery life?
Battery life cut after 3.1.3 update on iPhone 3G
3.1.3 Firmware is a battery killer - how do I back out this upgrade?
Poor battery life with iPhone 3G running 3.1.2
3.1.2 EXTREME battery drain - what gives?
iPhone 3GS with fw 3.1 – battery life gets even worse
upgrade to 3.0 drains my battery
Battery Drain after Update 2.2.1
Battery Life Radically Decreased after 2.2.1 Firmware Update
Yup, did the trick for me, I simply disabled push and battery has stabilized. Thanks
Possibly because no two phone images are identical and if it is an IOS bug, it's not consistent across all phones because there are too many variables, apps , settings, etc. Apple can't possibly QA every version of IOS on every phone image. There is something on my phone and many others' phones that activates this bug. Just an (un)educated guess.
I don't know if this solves other people's phone problems, but it totally worked for me. I deleted icloud, gmail, hotmail and exchange accounts, reset network settings, and then reinstalled all mail accounts with normal config (including push notification). This morning I was losing power 1% every 2 minutes on stanby--I timed it and got really really scared because my phone was essentially a paper weight when it wasn't plugged in--and now I am losing power 1% every 15-16 minutes. Incredible!! Thank you Lawrence.
I wish everyone else luck with your troubleshooting! I'm also going to recalibrate my battery tonight to see if there is increased improvement.
my phone was in ios 6.1 and the battery lasts a day. 2 days to be precise. a limit of texting.
A movie marathon = lasts 6 hours
music player = listening to music player at 12 AM GMT +8 @ 56% until woke up at 7 Am GTM +8 with 44%.
texting lasts more than a day.
Wifi = 3 hours or more.
wifi + online game = 1 hour or more.
also you should set as new phone during restore or upgrading since you have Icloud back ups.
I did it after I upgraded to ios 6.1. The battery became good than ios 5.1.1 (restored the back up from 4.3 that's why i have battery issues).
Ever since I downloaded the iOS 6.1.2, it has increased my battery drain. I was able to last a while on a high battery percentage and now it drains really fast even when I don't use it.
I have a 4s with new 6.1.2 and I had my phone drain in less than 8 hours with one phone call to 20% then to 10% in 3 min and then shut down. All of my settings were same. Yesterday on old software I would get after a full day at work my phone would sit at 65-70%. This is unacceptable!
I believe setting as new phone will fix the battery issue. Since you have icloud backups, i hope. 😉
I disabled my Exchange based calendar earlier today and the battery drain ended. Haven't yet re-enabled it to see if the drain starts again but it seems to have been cause by my work calendar. The 6.1.2 release notes specifically said this was the reason for the update but it doesn't appear to have worked, at least for me.
My 4s is doing good at 6.1.1 battery drain 1% every one hour on standby. With 3G active, wifi, bluetooth all is on. Several apps using location services and notifications. I have 3 mails (2 gmails and 1 yahoo). Also use iCloud for mail, contacts and find my iphone. From 100% full charge, it took about 8 hours standby to 99%. After that reduce 1% every hour on standby.
With iOS 6.1.2 it reduced 1% every 30-40 minutes. Getting worse although it's not to bad. The same condition wifi on, bluetooth, notifications, emails and location services. Now is 80% with 1 hour 27 minutes usage. Browsing, play games and download apps and standby 11 hours 55 minutes.
Ios 6.1.2 still has battery drain!
