Bruce Johnson5
Level 1 (15 points)

Q: iTunes could not backup iPhone because the iPhone disconnected

I've tried seaching for an answer for this problem and can't find one that works. I've tried the basics and even restored my iPhone 4S (and restarted it). Yet, I still keep getting the above message every time I try to back up even though my iPhone is hardwired to my laptop. Any other ideas out there to solve this one?

 

Thanks!

iPhone 4S

Posted on Jan 28, 2012 4:51 PM

by Lawrence Finch,Solvedanswer
Lawrence Finch Lawrence Finch
Level 8 (38,298 points)
Mac OS X
A:

the next thing I would check is the cable and connector. However, you said you had restored the phone without error, so that is not likely to be the problem.

 

It's possible that your backup is corrupted, although that usually causes the backup to hang rather than quit. You can try deleting the backup (iTunes Preferences, Devices section); this will clear the problem if the backup is corrupt. If you don't have a backup of it and don't use Time Machine you may want to just rename the backup folder instead of deleting it. It is located at ~/Library/Application Support/MobileSync/Backup/. Rename the folder at the end to Backup.sav or something similar.

Posted on Jan 28, 2012 6:04 PM

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Bruce Johnson5

Q: iTunes could not backup iPhone because the iPhone disconnected

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  • by JoeBenton,

    JoeBenton JoeBenton Aug 18, 2013 6:28 AM in response to Bruce Johnson5
    Level 1 (0 points)
    Aug 18, 2013 6:28 AM in response to Bruce Johnson5

    It seemed to be iZip for me too. I had followed these steps for it to only work after i removed the iZip app:

     

    - I deleted old backups in iTunes preferences,

    - Turned off wifi on iPhone (to prevent air syncing for now)

    - Deleted iZip app from my phone

     

    After doing these steps I managed to finally complete a full sync and backup.

     

    Watchout for these strange apps!

  • by rravindra,

    rravindra rravindra Aug 18, 2013 9:41 AM in response to Bruce Johnson5
    Level 1 (0 points)
    Aug 18, 2013 9:41 AM in response to Bruce Johnson5

    same error here too for my iPad 2. it suddenly stopped backing up about a month back while it would sync alright. I tried all the things mentioned on the thread but alas none worked for me until I found one of the reply from "Stephen Ian Chua" ..mentioning about iUnarchiver Pro app and I remembered I had installed it some time back. I deleted the app and voilaaaa it completed the backup of my iPad successfully. Thank goodness. Thing to note is that the same app is installed on my iphone 5 but I had no issues there.

     

    one reason for this could be the ios versions. iphone 5 has 6.14 whereas ipad 2 has 6.1.3 both are latest versions on the respective devices.

     

    rest i am running everything latest on my MBP...latest macos, latest itunes software...all latest updates and patches etc. installed as of today.

     

    So take note of this as it may be one of the issue you have on your device.

     

    BTW i also have iZIP installed on my iphone 5 along with iUnarchiver Pro...seems to be working fine there.

    I reckon its the difference in IOS version on the iPhone 5 and iPad 2 that is causing some incompatibility issue between the app and the ios on corresponding platform.

     

    I wonder why Apple is keeping different buids for both idevices on 6.x series

     

    Regards,
    Ravi

  • by Calster30,

    Calster30 Calster30 Sep 10, 2013 6:03 AM in response to Mick_M
    Level 1 (0 points)
    Sep 10, 2013 6:03 AM in response to Mick_M

    Double check you are connected to a USB2 port on your computer and not a USB3 port. I know it should work fine, but it doesn't in my experience.

  • by Tarasius,

    Tarasius Tarasius Sep 17, 2013 7:04 AM in response to Bruce Johnson5
    Level 1 (0 points)
    Sep 17, 2013 7:04 AM in response to Bruce Johnson5

    ok. PROBLEM SOLVED!

    here's my method for solving this problem: 

    i tried all methods in this thread but its all was useless/ so i've had same problem and same error.

    i have a very big amount of photos at my iphone5-64gb its about more than 10000 files in 7 or 8 folders.

    My solution is

    1/ quit the itunes. and quit all apps in your Iphone.

    2/ connect your iphone.

    3/ copy as much photos off your iphone to your pc, then delete all that was copied from iphone. You can do it from your Explorer in Windows or shell on your Mac.

    after this my backup goes very well.

  • by Chossin,

    Chossin Chossin Sep 17, 2013 11:15 AM in response to Lawrence Finch
    Level 1 (0 points)
    Sep 17, 2013 11:15 AM in response to Lawrence Finch

    Thought for ages it was my cheap cable not working, but you're solution worked for me!  You're a star!

  • by IanJH,

    IanJH IanJH Sep 19, 2013 2:40 AM in response to Bruce Johnson5
    Level 1 (0 points)
    Sep 19, 2013 2:40 AM in response to Bruce Johnson5

    Removing iZIP worked for me too yey.

     

    Thanks a lot guys, great thread!

  • by JHamp,

    JHamp JHamp Sep 19, 2013 1:29 PM in response to Danny09
    Level 1 (0 points)
    Sep 19, 2013 1:29 PM in response to Danny09

    Yes, after 6 weeks of no backup, this also worked for me.  Thank you Danny09!!!

  • by wangypoohead,

    wangypoohead wangypoohead Sep 21, 2013 12:19 PM in response to Lawrence Finch
    Level 1 (0 points)
    Sep 21, 2013 12:19 PM in response to Lawrence Finch

    Thank you so much, Lawrence Finch!

  • by Lawrence Finch,

    Lawrence Finch Lawrence Finch Sep 21, 2013 12:25 PM in response to wangypoohead
    Level 8 (38,298 points)
    Mac OS X
    Sep 21, 2013 12:25 PM in response to wangypoohead

    I'm glad your problem is solved.

  • by andreosokin,

    andreosokin andreosokin Sep 23, 2013 10:24 AM in response to Lawrence Finch
    Level 1 (0 points)
    Sep 23, 2013 10:24 AM in response to Lawrence Finch

    Thanks, Lawrence. Connecting the iphone via rear USB input solved my case.

     

    So it certainly has nothing to do with iZip, folks.

     

     

    FYI, I'm using an iPhone 4S on Windows 7

  • by mboonieNY,

    mboonieNY mboonieNY Sep 27, 2013 9:08 AM in response to Lawrence Finch
    Level 1 (1 points)
    Sep 27, 2013 9:08 AM in response to Lawrence Finch

    I started having this problem a few weeks ago.  It happens whether I try to back up to my computer or to iCloud.  So, it appears that I have to Restore my phone.  If I do that, will I be able to use my last good backup (9/2/13) to recover my contacts, photos, etc?  (I would hope the answer is yes, otherwise what's the point of backing everything up?)  If the answer is no, what the best way to save as much information as possible before doing the restore?  Thanks.

     

    - mb

  • by Lawrence Finch,

    Lawrence Finch Lawrence Finch Sep 27, 2013 4:01 PM in response to mboonieNY
    Level 8 (38,298 points)
    Mac OS X
    Sep 27, 2013 4:01 PM in response to mboonieNY

    You can reload your last good backup. If you have iZip on your phone try deleting it.

  • by kum sung,

    *** sung *** sung Sep 28, 2013 7:23 AM in response to andreosokin
    Level 1 (0 points)
    Sep 28, 2013 7:23 AM in response to andreosokin

    Thx andreoskin,

     

    I have the same problem like the rest after I update to iTunes 11.1 (Win 7) and my iphone 4s to iOS 7 few days back.

     

    Only after I connect the iphone via rear USB input did it solve my problem.

     

    I am happy & feel safe as I finally manage to backup my iphone.

     

    FYI: I have no iZip install on my iphone.

     

    -ks

  • by ohwussup,

    ohwussup ohwussup Oct 2, 2013 4:05 PM in response to Bruce Johnson5
    Level 1 (0 points)
    Oct 2, 2013 4:05 PM in response to Bruce Johnson5

    Sorry for bumping an old thread but I have the opposite problem.

     

    My phone synced fine.  And now when I try to restore from back up it has the "could not restore because iphone disconnected" error.

     

    I have spent two days scouring google/applediscussion/macrumors for an answer and none seem to work.  Has anyone had this problem before?

     

    It synced well, then when I needed to restore from back up, it will start the back up process but always cut out with the iphone disconnecting.

  • by Lawrence Finch,

    Lawrence Finch Lawrence Finch Oct 2, 2013 4:13 PM in response to ohwussup
    Level 8 (38,298 points)
    Mac OS X
    Oct 2, 2013 4:13 PM in response to ohwussup

    This is usually a USB problem. If you are using a USB hub, don't. Connect directly to the computer. And if you have a desktop or tower case computer use a USB port on the back, rather than the front. And disconnect any power-hungry USB devices connected to the computer (e.g., USB hard disks).

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