Q: iPhone 6 Plus Connecting and Disconnecting when syncing

i used an air gun to blow iPhone hub and it works fine now.. dust might disturbing the sync process.

I have had the same problem. Swapped the lightning cable for another one. Problem solved, at least for now!

I have MANY iDevices and in my experience the lightning cables (apple or otherwise) tend to be of very poor quality/fit so either break or wiggle around in the port.

I've had fewer problems with Belkin cables than any other - the fit is not as good as apple's but is better than many others (the metal part is a bit too long so the plastic part does not butt up against the phone as it should) but the quality is very good. Hope this helps.

Setup - iPhone 6 and iMac (21.5-inch, Late 2013) running OSX 10.11.1.

Hi

I think its iTunes issue after iTunes open automatically after plugging in the iDevise ( min is iphone 6+ 64g ) ,

So i guessed if i stopped iTunes from opening it will fix this issue , so i did this :

From the iTunes menu at the top go to iTunes>Preferences>Devices>Prevent iPods, iPhones and iPads from syncing automatically. Check the box at the bottom of that window. Click OK, quit iTunes.

That will stop iTunes from launching when you connect the phone stop automatic syncing.

And after that i fixed my issue and i can open iTunes if i need it manually .

Hope it will help !!

I have a MacBook Air, purchased new in November of 2015. iPhone 6S+, iPad mini 3. My first 6S+ and the one they swapped out last week (for a different issue related to my car stereo) and iPad won't stay connected to either USB on my computer via any number of "official" Apple cables. I hardly think this issue is as simple as using the right cable or the port being bad; unless I've coincidentally got 2 bad ports on a 3 month old computer and happen to also have 15 bad cables. The USB ports and cables all work fine with everything else. This seems to be an Apple issue which they need to resolve.

YA! I hate links, just tell us how!

Any solution to this yet? Happening to me on a brand new out the box macbook pro retina. Not impressed as want to backup 60GB of data from phone 6 to laptop...

Nope. Happens on iPad Air here with Lightning and iPhone 4 will old cable and switching the cable didn't fix it. It's an OS X (or iTunes) bug. Pure and simple.

Yes, it's a software bug—perhaps in iTunes.

No, it's not a software bug. If it were it would affect 700 million people, and it clearly doesn't, because many of them would post about it. It's a problem with your computer or your iPhone. Most likely it's dirt in the lightning connector on the bottom of the phone.

Yeah no it's not dirt.

A lot of people say that, until an Apple store takes a paperclip to the lightning port and fixes it. If it's not that its a hardware problem with the phone or the computer. It definitely is NOT software, because, as I said, it would affect millions of users it it was.

And the number of users who have the latest iTunes who sync wired? That's right, you've no clue. If it's not the iMac hardware it's certainly not all our devices coincidentally across several cables. The two possibilities are iMac hardware of software. We'll see.

I sync or back up 2 iPads and 4 iPhones on a daily basis, and I've been syncing all of my iOS devices via cable for almost 9 years. I have never had the symptom you describe, in all of that time. Syncing either to Windows or a Mac.

Yes, if Lawrence doesn't have an issue it doesn't exist. You heard it here first guys.

For me, it seems that Lawrence's explanation on USB power distribution did the trick. I couldn't work out why this problem was only happening on my MBP, when I could connect and charge my iPhone 6 to other machines.

Worked out that I use a monitor both at home and at work, connected by HDMI. When I removed this and connected the iPhone, the crazy connect/disconnect repetition stopped. I then reconnected the monitor and all seems to be working perfectly. Just as a test, I unplugged all, replugged the monitor first and then the iPhone, and it went crazy again.

Ahh, the simple things.