iPhone keeps disconnecting from Mac

I had this issue too and i have to say that i was not ready to spent 2300 euros for a computer with this issues

i don't know about the others but, changing cable, usb hub, ecc ecc are for me waste of time.

this product if far away from my expectetion

This didn't work for me. I've had this problem with both my iPhone 6S and my iPhone 7 Plus. I've tried numerous cables and even OTHER phones that weren't even mine. It's for sure a bug in the MacBook that Apple somehow overlooked while they were busy adding Siri to the MacBooks, yet something else we don't need.

You are amazing dude! How in **** it's related to location services... I have no clue, but I did it and now it works fine... how also this happens on 1 usb port only is beyond my understanding.

Regards,

Damián.

Was able to "fix" the problem by using other cable. I used Belkin. Still trying to see why a cable would do this, so in my experience it is the hardware issue, not software. The cables I had problem with were original Apple tried both original short one and longer one I bough at Apple Store, both ports on my 2015 MBP were glitching. The one on the right side was connecting/disconnecting. The left one was not syncing up, but a charge icon appears on iPhone. Using non Apple cable fixed both problems. *** Apple?

After several months of investigating the causes of this issue I decided to purchase a new cable, but not an Apple cable, instead I opted for a PureGear Charge-Sync cable, and instantly the issue was fixed!!!

Now I can conclude that this issue may be somehow caused by Apple cables.

It almost drove me crazy, because I tried several Apple cables with no success, I also thought it was a problem with my MacBook Air USB ports, or an iTunes bug, or and iOS bug, but none of them!!!

Please try it http://www.pure-gear.com/shop-by-category/connect/braided-charge-sync-cable-for- micro-usb-devices-48-1308.html

My conclusions so far after investigating this issue for half a year:

1. Many people still experience this issue after resetting location settings, so I discard this as the cause.

2. This issue affects both Mac and Windows systems.

3. I solved the issue using a MFI cable and using the same iTunes, macOS and iOS version, so it may not be an iTunes bug or an iOS bug.

4. I hardly believe Apple brand sync cables CHIP may have a defect (hardware or software) that cause this malfunction.

5. Not all Apple brand sync cables seems to be affected.

6. I really encourage people to try MFI sync cables before considering any other option, or if all other solutions have failed, at least it was the only option that worked for me after a year of headaches!!!

Tried all the solutions here except the usb hub solution.

I noticed that this happens only on both my ipad mini 2 and ipad mini 3. It doesn't happens to my iphone 6 plus.

What works for me was to connect both the iphone 6 plus and ipad mini together on my macbook pro mid 2015.

When i disconnect my iphone 6 plus, problem arises again. Problem disappears again once i plugged back my iPhone.

Tried with a mouse + iPad mini combination, Problems doesn't go away
Tried with a normal usb + iPad mini combination. Problem doesn't go away

Tried with android phone + iPad mini combination. Problem doesn't go away

My conclusions so far after investigating this issue for half a year:

1. Many people still experience this issue after resetting location settings, so I discard this as the cause or fix.

2. This issue affects both Mac and Windows systems.

3. I solved the issue using a MFI cable and using the same iTunes, macOS and iOS version, so it may not be an iTunes bug or an iOS bug.

4. I hardly believe Apple brand sync cables CHIP may have a defect (hardware or software) that cause this malfunction.

5. Not all Apple brand sync cables seems to be affected.

6. I really encourage people to try MFI sync cables before considering any other option, or if all other solutions have failed, at least it was the only option that worked for me after a year of headaches!!!

Has Apple even addressed this issue? The only way my iPhone 6 and iPad Air sync is using a USB hub in between. If I plug directly to the laptop the issue occurs. No problem whatsoever when charging from the wall or connecting to a PC. I have a mid-2015 Macbook Pro Retina 15". Things like this should not be happening.

I also got a new Lightning cable when I got a new Apple TV and it worked for a couple days...then back to the disconnecting issue. GRRR so frustrating.

I know this is an old thread, but hoping I can help someone. Not a perfect fix, but I was able to connect using a USB hub that we had purchased for our PS3. I've tried all of the other suggestions, and nothing worked. If all else fails, try using a USB hub.

Nailed it (well for me anyway). Working on what has been said about current draw I turned the backlight right down and went into airplane mode. Works fine now.

MBP(R) 13" and Ipad Pro 9.7.

Hope thats helps

Want to share my experience too. I got the same problem before for my iMac and my iPhone 6s Plus. I tried all the method like change some setting in my phone and iMac, change different cable but still not my case. At the end I used Isopropyl Alcohol clean all of the connect point of the usb cable and the usb port in my iMac as well. After that everything back to normal.

Turning on airplane mode did it for me.

And after successfully connected my iPhone to the Mac (or iTunes) with airplane mode 'ON', I can turn 'OFF' the airplane mode without having the rapid connect-disconnect got triggered.

After that I can connect-disconnect my iPhone without having the need to turn 'ON' the airplane mode again.

Weird, but it happened to me.

Ipad Air 2 as well as iPhone SE on latest MacBook Air 13" disconnect/reconnect all the time. I turned off bluetooth and they are both charging now. (After have rebuilt permissions and done all the other suggestions here, of which none worked for me.) So this is more like the airplane mode solution. I suppose (pulsing) the (bluetooth and maybe more) network interfaces influences USB power too. I really needed the wired connection because Astropad can't connect wirelessly anymore after last Sierra update (Duet won't connect at all...)

Really?

After the airplane solution as above, I have never experienced the same again.

Oh and additionally, the next two days after getting my wired connection back to work, I updated my iPhone into the latest public beta available.

The reason for the update to beta (yeah buggy but working) is that my iPad Pro did not experience any of the wired connection, and it was on the latest public beta, while my iPhone was on the latest official release.

After the update to this day it has never occurred to me anymore.