iOS devices connecting and disconnecting rapidly.

iOS devices connecting and disconnecting rapidly. I've been having this issue for a while with my iPad Air 2: When I plug it into my MacBook, it will act as though I am plugging it in and unplugging it rapidly, and will not stay connected long enough for me to sync or backup with iTunes.
Asked by: Guest \| Views: 205

Total answers/comments: 5

Comments display order:

bert [Entry]

"Nikolay Schamberg

@schamberg

Rep: 4.8k

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bert [Entry]

"I also had this problem with my iPhone 6 and MacBook Air with an original Apple cable that works fine when charging normally, so it had to be something with the computer.

I chatted with Apple customer support and they told me to update to the newest OS-X and do an SMC reset on my MacBook Air. It’s easily done and did the trick for me. They also told me I could try an NVRAM reset, but this was not needed in my case.

Hope this can help someone!"

bert [Entry]

"After trying all the recommended fixes for this issue in all the different forums I could find (new cables, privacy setting resets, full system reset etc) I still had the problem so I have come up with a work around.

I now plug all my devices - iPad, iPhone - in to a USB multiport and then connect the multiport’s USB cable to my MacBook air. Problem solved!

I’m using the Belkin 4-Port USB 3.0 Powered Hub! - Which I’ve plugged in to power as well as to my Mac.

Basically, letting the Hub power my devices Vs my Mac."

bert [Entry]

"Mine always does that. I think it's because battery is not charged enough.

I can only connect successfully when my MacBook Air battery is 100% even then it takes a second try :) .

I think it doesn't get enough energy from USB when battery is not charged enough. So it keeps try to get enough voltage and fails. I haven't tried but maybe a shorter cable would fix our issue.

Try when your battery is full. You'll see it connects successfully."

bert [Entry]

"After a long time with this issue, my conclusions:

some of us are having this issue because of a board design issue, current demand from our USB device(iphone/ipad) is higher than mac USB can provide, as a result the port fails.You will see this issue more frequantly when your device pulls more current - when it has low battery and tries to quick charge or when you use a high demand devices(ipad/Plus/Max)when only the SUDO KILL command helps you have the 1 & 2 issues i wrote."