Earcom2

Q: iPhone 5 with 9.2.1 NEW battery drains ONLY overnight

Over the last few weeks my iPhone battery has been draining overnight. It will be at 55% and the next morning completely dead. Took it to Apple they replaced my battery under warranty cause I replaced it in November and reset network and device settings. Last night it had about 33% and I woke up to it completely dead. I had no apps running. During the day it doesn't drain in standby.  It will maintain 100% in standby during the day. Is there a bug in 9.2.1?

iPhone 5, iOS 9.2.1

Posted on Feb 19, 2016 11:31 AM

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Q: iPhone 5 with 9.2.1 NEW battery drains ONLY overnight

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  • by djanton73,

    djanton73 djanton73 Feb 22, 2016 8:09 AM in response to Lawrence Finch
    Level 1 (0 points)
    Feb 22, 2016 8:09 AM in response to Lawrence Finch

    Yes I hope you were right. However, as I write this now, my iPhone is off and being charged. And it feels hot. I'm afraid it's a hardware issue...

  • by Earcom2,

    Earcom2 Earcom2 Feb 22, 2016 8:44 AM in response to Lawrence Finch
    Level 1 (0 points)
    Feb 22, 2016 8:44 AM in response to Lawrence Finch

    I Put my phone in airplane mode last night and it did not die. I also changed my iCloud mail to fetch instead of push.

  • by djanton73,

    djanton73 djanton73 Feb 22, 2016 7:35 PM in response to Lawrence Finch
    Level 1 (0 points)
    Feb 22, 2016 7:35 PM in response to Lawrence Finch

    Hello again

     

    Just finished calibrating last night. I turned it on, checked some e-mail, did a setting and let it unused overnight. Now that I wake up, I've checked it, count the timeline and the battery percentage is dropped more or less at 50% in 7 hours!

     

    I think it's a hardware failure. Should I replace the unit or checked it again to a skilled technician?

  • by Lawrence Finch,Apple recommended

    Lawrence Finch Lawrence Finch Feb 23, 2016 3:00 AM in response to djanton73
    Level 8 (37,992 points)
    Mac OS X
    Feb 23, 2016 3:00 AM in response to djanton73

    What you should do is back it up to iTunes, then restore it using iTunes and set it up as a new phone. Do not add any email accounts. Do not log in to iCloud. Do not add any apps. Then check the battery life. If it still drains it's a hardware problem. If it doesn't, its software. And if it doesn't restore your backup and test again. You should make it an encrypted backup to keep health data and passwords, and write down the encryption key!

  • by djanton73,

    djanton73 djanton73 Feb 23, 2016 1:17 PM in response to Lawrence Finch
    Level 1 (0 points)
    Feb 23, 2016 1:17 PM in response to Lawrence Finch

    Heiiii Lawrence

     

    I guess you were right. I follow your method. No e-mail, no apps installed, no background refresh. Just (accidentally) log into iCloud. The battery holds up at 85% for more than 10 minutes in sleep/standby mode. I haven't restore the encrypted back up yet.

     

    Before the cable failure thing happened, I have tons of apps and the battery still holds up very well (that's why I love Apple).

     

    The big question remain: which app cause the draining? Should I installed them one at a time and see which apps that cause the draining problem? Do you have any other suggestions?

  • by Lawrence Finch,

    Lawrence Finch Lawrence Finch Feb 23, 2016 4:47 PM in response to djanton73
    Level 8 (37,992 points)
    Mac OS X
    Feb 23, 2016 4:47 PM in response to djanton73

    First, try restoring the backup. After the backup restores iTunes will reload your apps and music. Frequently the problem is an app that has corrupt data or a corrupt cache, and if it isn't preserved in the backup the app will start working correctly again. If that doesn't happen post back; there's a hierarchy of suspects that should be checked first,

  • by rkotecha,

    rkotecha rkotecha Mar 2, 2016 4:58 AM in response to Earcom2
    Level 1 (0 points)
    Mar 2, 2016 4:58 AM in response to Earcom2

    im having the exact same problems as you. Both my iPad and iPhone have this mysterious overnight battery drain issue.

     

    safari has some alarming stats, as you've pointed out. I used to be able to leave my iPad uncharged for days, flip open the cover and have significant charge.

     

    its got to the point now that I have to count on these devices being dead every morning unless I plug in them in.

     

    during the day they're mostly ok, though I've noticed the iPhone heats up a lot when I'm seemingly doing nothing. Nothing obviously running in the Background and I've tried all of these suggestions including full wipe. Which I might add are a major pain to execute.

     

    Exchange might be the issue on iPhone but not iPad (not setup yet).

     

    im taking my devices into an Apple Store to get this figured out. They can run more detailed usage reports broken down hourly.

     

    i would suggest apple be more transparent about bugs in general, and allow end users access to detailed usage data.

  • by Earcom2,

    Earcom2 Earcom2 Mar 2, 2016 8:21 AM in response to Lawrence Finch
    Level 1 (0 points)
    Mar 2, 2016 8:21 AM in response to Lawrence Finch

    I Charged my phone to 100% and unplugged it before I went to bed and woke up to it drained to 64%. It was not on wifi and I reset the cell data stats. When I looked at it in the morning no apps used data and the system services used a few KBs. I also notice that my phone will display the message that I need to enter my password because it was restarted even when I didn't restart it. I'm going to try and leave the phone in low power mode to see if that does anything.

  • by djanton73,

    djanton73 djanton73 Mar 3, 2016 8:03 AM in response to Earcom2
    Level 1 (0 points)
    Mar 3, 2016 8:03 AM in response to Earcom2

    Hello

     

    I've just replace the U2 IC chip. And it works like a charm. I put it on a test, I let my iPhone sleep for more than 15 mins and the battery percentage didn't drop even on one percents!

     

    I would've strongly recommend this:

     

    1. Never use a third party lightning cable

    2. Don't frequently recharge your device with powerbank or car charger until it reaches 100%! Those are for emergency only. Keep that in mind!

    3. If possible, charge your device in Airplane Mode or shut down completely. If no, make sure your device and the lightning cable doesn't heating up. If such issue occur, please remove it for awhile and make sure your lightning port is dust free.

     

    Good luck!

  • by KC7GNM,

    KC7GNM KC7GNM Mar 3, 2016 8:13 AM in response to djanton73
    Level 4 (2,893 points)
    Mar 3, 2016 8:13 AM in response to djanton73

    The only good advice is #1. #2 and #3 are bad advice. You should not worry about charging your phone with a powerbank or car charger. They only provide the power that USB normally does. I use a car charger all the time and have no problems. Keeping your device in airplane mode pretty much makes the phone useless while charging. You will not be able to actually use it as a phone doing that.

  • by djanton73,

    djanton73 djanton73 Mar 3, 2016 9:08 AM in response to KC7GNM
    Level 1 (0 points)
    Mar 3, 2016 9:08 AM in response to KC7GNM

    Of course it will be useless. I said, "IF POSSIBLE". And yes, I sure hope you MAINTAIN YOUR CAR well...

     

    Good luck with that

  • by MollyShepparton,

    MollyShepparton MollyShepparton Mar 7, 2016 11:33 PM in response to djanton73
    Level 1 (0 points)
    Mar 7, 2016 11:33 PM in response to djanton73

    iphone 5 - Can anyone help me?  I have a draining battery and overheating phone too!  I tried the process that Paul (if another thread) suggested (thanks Paul - it did help a bit) but I still have trouble with my battery draining drastically.  I know others have posted that certain apps are causing a lot of drain on their phone......for me it is the HOME & LOCK screen that is using up the majority of the charge e.g. 87% in a very short period of time.  I don't have many apps on my phone and the other apps only use a few % points in any given 24 hour period.  However the HOME & LOCK screen chews up huge amounts for some weird reason e.g. overnight my phone will be run down to low as.  I have checked everywhere on the phone to see what can be done to stop the HOME & LOCK screen drain, but I am at a loss.  P.S.  The battery is relatively new as I replaced it late last year thinking the problem was just a dud battery given the phone is over 2 years old.  But obviously it is not the battery.  However this new apple battery also gets really hot at times too!  Go figure.....  A solution will be appreciated.  Thanks.

  • by MollyShepparton,

    MollyShepparton MollyShepparton Mar 8, 2016 1:17 AM in response to Lawrence Finch
    Level 1 (0 points)
    Mar 8, 2016 1:17 AM in response to Lawrence Finch

    iphone 5 - Can anyone help me?  I have a draining battery and overheating phone too!  I tried the process that Paul (in another thread) suggested (thanks Paul) but I have still have trouble with my battery draining drastically.  I know others have posted that certain apps are causing a lot of drain on their phone......for me it is the HOME & LOCK screen that is using up the majority of the charge e.g. 87% in a very short period of time.  I don't have many apps on my phone and the other apps only use a few % points in any given 24 hour period.  However the HOME & LOCK screen chews up huge amounts for some weird reason.  I have checked everywhere on the phone to see what can be done to stop the HOME & LOCK screen drain, but I am at a loss.  P.S.  The battery is relatively new as I replaced it late last year thinking the problem was just a dud battery given the phone is over 2 years old.  But obviously it is not the battery.  A solution will be appreciated.  Thanks.

    * Forgot to add that I only have the HOME & LOCK screen set on 1 minute so doesn't explain the huge drain of battery i.e. it's not on 'never' lock.

    *And I don't have Facebook app loaded on my phone either.

  • by Earcom2,Solvedanswer

    Earcom2 Earcom2 Mar 12, 2016 7:40 AM in response to Earcom2
    Level 1 (0 points)
    Mar 12, 2016 7:40 AM in response to Earcom2

    I Think I figured out my issue. I have my wireless router set to turn off overnight. I think when the phone loses its  connection there's a software glitch that causes it to drain the battery. If I disable wifi before going to bed I only lose maybe 5%.

  • by Lawrence Finch,

    Lawrence Finch Lawrence Finch Mar 12, 2016 9:07 AM in response to Earcom2
    Level 8 (37,992 points)
    Mac OS X
    Mar 12, 2016 9:07 AM in response to Earcom2

    As I said earlier, why don't you just leave the phone plugged in overnight? Then the battery won't drain at all.

     

    If the phone does not have a WiFi connection it will fall back to a cellular data connection, so any apps that run in background will use cellular data rather than WiFi. If the data transfer is heavy this will run down the battery.

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