iPhone keeps disconnecting from Mac

Launch the Console application in any of the following ways:

☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

☞ Open LaunchPad. Click Utilities, then Console in the icon grid.

Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select

View ▹ Show Log List

from the menu bar.

Click the Clear Display icon in the toolbar. Then try the action that you're having trouble with again. Select any messages that appear in the Console window. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message (command-V).

When posting a log extract, be selective. In most cases, a few dozen lines are more than enough.

Please do not indiscriminately dump thousands of lines from the log into this discussion.

Important: Some private information, such as your name, may appear in the log. Anonymize before posting.

I seem to resolve this issue on my 15" 2015 MacBook pro by unhooking it from charger and all other peripherals. It then stopped the disconnect connect cycle on the iPhone. I could then plug the power and peripherals back in.

I can confirm that this does indeed work. And I discovered that it will also work if you plug in only one device IF it has enough juice in it. Like around 60% or more. So if you plug in your ipad, make sure it has at least 60% battery. Same with the iPhone.

I had the same problem, Apparently it got fixed when I tried with original lightning cable.

The USB Hub solution works for me. Whenever i connect my ipad or iphone directly to my macbook air, it will always disconnect/reconnect. But once I use a usb hub, it connects steadily...

I bought a belkin duratek cable and work now. This cable is better than the apple’s cable

I used to have similar issue, but I later got to realize that if my Iphone 6 is not fully charged before connecting to any of the two USB ports of my Macbook Air, it keeps disconnecting. So just charge your Iphone fully and try connecting to the Macbook again.

I can't belive after all these years NO ONE has ever figured out the fix. I DID figure it out though just yesterday, the REAL fix. It's NOT the cable, and it's NOT a software issue!

It's the 3-prong plug! I can't believe I didn't figure this out sooner and to think I have been a mac user for 10+ years. Haha! I have been using the two-prong (US standard) plug and I don't know, for some reason, the issue occurs when I am using the two-prong plug. It could be because of the 'ground' prong provides a more stable charge? I could be too sure as I am not an electrician, but my solution to switching to the 3-prong plug seemed to have worked for me.

Let me know if this fixed your issue too.

Try to plug in directly to the wall outlet. I also experience the discon/recon issue even with the three prong, but it has improved so much. It doesn’t happen as often. But it seems to happen even less (or not at all) when I’m plugged in directly to the wall outlet. I feel more and more sure it has something to do with the power plug. Or perhaps it’s a combination of the quality of the lightning cable, the stability of the power source and the usb port. Also try changing your mac’s power cable, or macbook charger.

I know this does not make any sense, but i tried 5 different ORIGINAL cables and none worked in any of the 2 USB ports. I then tried another brand of cable (acker) I stretch it all the way and once it connected i DID NOT MOVED IT until it was done. And it worked !!! So like I said it does not make any sense at all as 2 of the OEM apple cables where brand new and just got them out of the iPhone box and had NEVER been used before. So the only advice I can give you is: try all different ways of fixing it and don't give up too quick, maybe (only maybe) you will be able to do it.

Had same problem on Late 2017 MBP ;

Little backdoor for your problem.

When nothing connected to Mac . I open VM (parallel) and run windows. when microsoft win. fully lunch you can plug your USB device or idevice; when its connected to VM; you can now shutdown Virtual Machine. Ones its shutdown your USB device keeps connected to your Mac.

Try hard resetting your iPhone when it is plugged into wall adaptor.

I tried and it solved my problem.

The way I fixed this problem was by keeping the usb out of port by a couple mm.

I've fixed this after trying every combination of cable / hub / software setting...

I plugged two devices in at once! This absolutely fixed it on BOTH phones that had the problem

google "usb hub". just buy one of it. connect macbook > usb hub > ipad/iphone.