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 (38,305 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 RobertZhao,

    RobertZhao RobertZhao Oct 4, 2013 12:04 AM in response to Bruce Johnson5
    Level 1 (0 points)
    Oct 4, 2013 12:04 AM in response to Bruce Johnson5

    I was using my iphone 5 as a personal hotspot on my imac and macbook pro. Apparently this seems to affect the backing up too. I decided to switched off both wifi and personal hotspot on the iphone and imac and it solved the problem. this was after I deleted the backup folder.

  • by huobx,

    huobx huobx Oct 9, 2013 8:55 PM in response to fsquad
    Level 1 (0 points)
    Oct 9, 2013 8:55 PM in response to fsquad

    OOOOOOOOMMMMMMMMMGGGGGGG THANK YOU SOOOOOO MUCH!!!!! YOU ARE A GENIUS!!!

     

    I've been working on this for the whole night and tried every single thing possible. My phone just wouldn't backup! It's the STUPID IZIP App!!!

  • by Nicholas Lovell,

    Nicholas Lovell Nicholas Lovell Nov 16, 2013 1:36 PM in response to huobx
    Level 1 (5 points)
    Nov 16, 2013 1:36 PM in response to huobx

    iZip here too!!!  It was a pain, I tried all of the different steps to try to troubleshoot, different ports, different USB cables, WiFi Sync, no WiFi Sync...

     

    The thing is, I didn't realize I had it installed on my phone at all!  I thought I did, but when I searched for it in the "Apps" Tab on iTunes, it didn't show up.  WEIRD! 

     

    Then, I was flipping through my phone and saw it!  It shows up in the search on iPhone, but not in iTunes, at least it didn't for me. 

     

    YAY!  FIXED!!! 

     

    (Boooo for iZip)

  • by LB321,

    LB321 LB321 Nov 24, 2013 7:49 AM in response to Lawrence Finch
    Level 1 (0 points)
    Nov 24, 2013 7:49 AM in response to Lawrence Finch

    Thank you Lawrence!  I did exactly what you said and my iPad2 is now "backed up!"  Many, many thanks  as I was

    really thinking my iPad2 was never going to be able to back up!

  • by geoffinhawthorn,

    geoffinhawthorn geoffinhawthorn Dec 11, 2013 10:09 PM in response to Bruce Johnson5
    Level 1 (0 points)
    Dec 11, 2013 10:09 PM in response to Bruce Johnson5

    USB issue!!

     

    I've spent about 4 hours with the same problem ("could not backup because iphone disconnected"), and mucked around with as many of the suggestions as I could (removing old backups on PC, closing all apps on the phone etc)

     

    Finally!!! Tried a different USB port on the PC and it finally worked (so now I can think about upgrading IOS on my ph, which I wasn't going to do without a backup!)

     

    And yes, it was a USB 3 that didn't work and a USB 2 that did

     

    Just for ref, setup is:

    Windows 7 on Dell XPS 13 Ultrabook

    iTunes 11.1.3.8

    iPhone IOS 6.1.3

  • by eiw2,

    eiw2 eiw2 Dec 28, 2013 9:36 PM in response to Bruce Johnson5
    Level 1 (0 points)
    Dec 28, 2013 9:36 PM in response to Bruce Johnson5

    I couldn't find the backup file but deleted the old backups via itunes-edit-preferneces-devices-device backups. the backup then worked great. thanks for the solution Lawrence!

  • by IDOC84,

    IDOC84 IDOC84 Dec 29, 2013 9:44 AM in response to Bruce Johnson5
    Level 1 (0 points)
    Dec 29, 2013 9:44 AM in response to Bruce Johnson5

    I was trying to back my wife's iPhone up for the first time in a year to her Dell XPS - one of the last posts was the answer - I switched from a USB 3.0 to the USB 2.0 on the computer and it worked.

  • by keith47424,

    keith47424 keith47424 Feb 1, 2014 12:09 PM in response to IDOC84
    Level 1 (0 points)
    Feb 1, 2014 12:09 PM in response to IDOC84

    Sorry for reopening this but this has just happened to me and I have tried everything. It started after I updated my iphone 5s to ios 7.0.5 and I have not changed anything else. Yet now all of a sudden I can no longer back up my phone through no fault of my own. I have not changed cables as I have no had to. I am still using the same USB. So after reading this thread I tried another usb port. No difference. It mentions IZip. Never heard of it? I tried to "archieve" old back ups but Itunes will not let me. The option is not even there so I have no idea what to do now.

  • by Lawrence Finch,

    Lawrence Finch Lawrence Finch Feb 1, 2014 12:22 PM in response to keith47424
    Level 8 (38,305 points)
    Mac OS X
    Feb 1, 2014 12:22 PM in response to keith47424
    • "Archive" is only available in iOS for Mac. If you have a Mac go to iTunes Preferences, devices tab, right (or CMD) click on the most recent backup. A floating menu should appear with the Archive option.
    • If you have Windows save the current backup and force a new one by changing the name of the backup folder to backup.sav. See: for the backup locations: http://support.apple.com/kb/ht4946
    • If you haven't yet, reboot your computer.
    • Have you tried backing up to iCloud?

  • by keith47424,

    keith47424 keith47424 Feb 1, 2014 2:01 PM in response to Lawrence Finch
    Level 1 (0 points)
    Feb 1, 2014 2:01 PM in response to Lawrence Finch

    Thank you for stating the information about Archieve. That is reason why as I have windows 7. But thank you for what you wrote. Then I got an error message "-50". However I have backed up now to icloud then changed my backup folder. This though has seemed to have fixed the problem for the time being. So thank you for that.

  • by chrom82,

    chrom82 chrom82 Mar 30, 2014 3:14 PM in response to Bruce Johnson5
    Level 1 (0 points)
    Mar 30, 2014 3:14 PM in response to Bruce Johnson5

    For what it's worth I was having this same issue on my brand new homebuilt PC.  It turned out to the the USB 3.0 ports so if you having the same trouble do yourself a favor and switch to USB 2.0 to try it. 

  • by drfazz,

    drfazz drfazz Apr 14, 2014 5:26 PM in response to Bruce Johnson5
    Level 1 (0 points)
    Apr 14, 2014 5:26 PM in response to Bruce Johnson5

    The following solution worked for me:

     

    Go to the Backup folder (,<user name>\AppData\Roaming\Apple Computer\MobileSync\Backup\ ) and remove all the backup files there, e.g. move them to your desktop. There should be no backups left in the folder.

     

    Go to iTunes and manually start a backup -> Click on your devive in the sidebar, click on the Summary tab at the top of the page, then click on the "Back Up Now" button on the bottom right hand side.

     

    The backup should now work through to completion.

     

    Good luck.

  • by BigUglyMark,

    BigUglyMark BigUglyMark May 10, 2014 8:30 AM in response to RobertZhao
    Level 1 (0 points)
    May 10, 2014 8:30 AM in response to RobertZhao

    I have had this problem with 4s and now 5s.

     

    Switched off wifi and all is good, backup and sync work perfectly.

     

    Suspect the phone was attempting to sync through wifi.

     

    Give it a try, what do you have to lose?

  • by gourav12345,

    gourav12345 gourav12345 Aug 7, 2014 11:27 PM in response to Bruce Johnson5
    Level 1 (0 points)
    Aug 7, 2014 11:27 PM in response to Bruce Johnson5

    hello

    i have ipod 5th generation 64 gb

    i restored from itunes and rite now i dont have any data in my ipod

    when trying to backup from itunes it is saying itunes cud not bcakup coz it cud not b saved on computer

    please help me please

    i hav lost all my photos nd videos

  • by fberndt,

    fberndt fberndt Aug 21, 2014 6:56 PM in response to BigUglyMark
    Level 1 (0 points)
    Aug 21, 2014 6:56 PM in response to BigUglyMark

    Good.

     

    I turned off the wifi in my iPhone 5 and deleted the old backup file from iTunes preferences/devices. It worked perfect.

     

    Nice solution

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