iPhone keeps disconnecting from Mac

Since upgrading to Mavericks, I have been unable to sync devices (specifically ipad mini and iphone 4s) to my MId 2013 Macbook Air. They wil rapidly connect and disconnect, and I'm unable to do anything with the device. This happens with both USB ports. Any suggestions?

[Re-Titled by Host]

MacBook Air, OS X Mountain Lion (10.8.5)

Posted on Nov 4, 2013 12:58 AM

Reply
Question marked as Top-ranking reply

Posted on Mar 1, 2018 12:30 PM

The solution is as follows:


  1. (Make a backup)
  2. Shutdown
  3. Connect your macbook with power (otherwise this won't work)
  4. SMC-reset (power management)
    1. Hold for 15 seconds: cmd + alt + shift + power
    2. If you have a MacBook with a magsafe adapter thats fully charged you will see the light change from green to orange for less than a second this means the reset has succeeded.
  5. VRAM reset (also known as PRAM reset if I'am not mistaken)

    Power on and immediately pres and hold: cmd + alt + p + r. This wil restart the machine, hold these buttons until the machine has tried to bootup two or three times then let go.


The problem could comeback but just use this 2 minute trick and your good to go.


Please let me know of this worked for you!


My hardware: MacBook Pro 15 inch 2015 (fully spect). Had this problem with: iPad 2017, Iphone 7+, Ipad 4, Iphone 6. All works well after this reset.

190 replies

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

iPhone keeps disconnecting from Mac

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.