This article explains how you can troubleshoot when your iPhone (or iPad) repetitively keeps connecting and disconnecting when you plug it into your Mac. This can be frustrating because, for example, if you experience this problem, you may be unable to charge your iOS device when you plug your charging cable into a USB port on your Mac.
Please try each step until your issue is resolved.
See also: iTunes Not Recognizing Your iPhone or iPad?
iPhone Disconnecting From Mac
1-The first thing you should check is your charging, USB cable for sings of damage. Try using a different cable. Try using a different USB port on your computer. Try unplugging and then replugging.
Also check the charging port on the bottom of your iPhone or iPad. Remove any debris. You may want to use a can of compressed air.
If you are using a defective, damaged, or non Apple-certified cable, you may see the “Accessory Not Supported” error.
2-Restart your iOS device and restart your Mac.
3-Ensure that you have the latest version of iOS.
4-Force restart your device. Here is how:
Different iPad and iPhone models require different steps to do this:
- Face ID iPad Models: press and release the volume up button and then press and release the volume down button and then press and hold the Top button until your iPad restarts.
- iPhone 8 and later models: press and release the volume up button and then volume down button. Then press and hold the Side button until you see the Apple logo.
- iPhone 7 models: press and hold the Side and Volume Down buttons together until you see the Apple logo.
- Home button iPad models and iPhone 6s and earlier models: press and hold the Side and Home buttons together until you see the Apple logo.
5-Disconnect your device from your Mac. And, on your iPhone or iPad, tap:
- Settings > General > Reset and tap Reset Location & Privacy.
And now connect your device to your Mac with your USB cable.
This will reset your location settings to the factory default. You will need to regrant permission for apps to use your location again.
6-Connect your iPhone or iPad to your Mac. And then open the Activity Monitor app (Applications > Utilities), or you can use Spotlight.
When you open the App, enter usbd in the search field. And the force quit the process by clicking the X sign.
You can also do the same thing via Terminal. Here is how:
- Open the Terminal app (Applications > Utilities). And the enter the following command:
- sudo killall -STOP -c usbd
- Hit enter
7-Try resetting NVRAM or PRAM on your Mac. Here is how:
- Unplug your device
- Turn off your Mac
- And turn on your Mac and immediately press and hold the Option, Command, P, and R keys together. Keep holding them for about 20 seconds. When you hear a start up sound then you can release the keys.
- And your Mac will restart.
Please note that, as stated above, if you are having this problem with your iPad, the same tips will still help you fix this problem.
If none of the tips help you, then you may want to contact Apple. Apple offers live chat support. You may also reserve a Genius Bar appointment.
THANK YOU!!!! I wish Apple was aware of this fix. I just spent 20 minutes with them to have them say I need to bring my laptop in for repair.
thanks a lot!
“sudo killall -STOP -c usbd” does the trick
Both Activity monitor -> X usbd and sudo killall -STOP -c usbd worked for me. Had this problem for about a year and now problem FIXED thanks to you!!!
Thanks, the killall command worked!
Killing usbd worked for me also, this has been bugging me for ages, thanks very much 🙂
Thanks 😊
Activity monitor: kill usbd worked for me. 👍
.. but in my case the problem comes back after a while and I had to kill usbd process again!
Reset Location and Privacy worked for me!
[email protected] USBd as well!
thanks a lot!!!
Genius!
You are awesome!
6. Activity monitor…X usbd worked for me.
Thanks a million!
sudo killall -STOP -c usbd worked. Thanks!
Sudo did it!!!! Thank you!
sudo killall usbd
&
sudo killall -STOP -c usbd
Worked.Thanks
Worked for me too! Thanks X 500!
Worked for me too 🙂
It’s worked for me, but after restart the Mac, comes back again.
Not for charge, but in TV app folder cannot appear the iPhone, or just for seconds 🙁
USBD really worked! I have been searching the solutions for 1.5 years. Thank you so much! I don’t mind repeating the same action as long as my iphone can be connected to the laptop.
Super worked! Terminal command thank you!
Yes! terminal command worked. thank you so much
number 6 solved it for when i need to sync my iphone with laptop. Rest of the time i charge it from the socket
USBD worked for me (but after I force restart my phone, resetting location and privacy setting, and resetting PRAM on my Mac). Thanks, however, does this mean I have to force quit USBD when I’m plugging my phone again?
Thanks you, it worked.