By Dylan / Last update January 25, 2021

Quick Navigation:

Have problems backing up iPhone with iTunes?

iTunes could not backup the iPhone because the iPhone disconnected

I was backing up my iPhone 8 on computer yesterday. Everything was perfect until I came across the problem reported by iTunes. It keeps saying my iPhone disconnected. I am sure I plug my iPhone to computer and there is the lightning icon on iPhone. Anyone could help me to solve the problem?

- Question from Apple Community

iTunes Disconnected

iTunes is often used to backup iPhone by users, but there are many known iTunes errors that could stop you from protecting iPhone data. Apple seems not so considerate at that time because there is no specific buttons or options in iTunes to help users fix iTunes issues.

Can’t backup iPhone because disconnected? When you backup iPhone with iTunes, hardware, iPhone system, or Windows system could cause the problem. How to fix iPhone disconnected issues? If iPhone keeps disconnecting from iTunes during sync, backup, or restore, you should check hardware first and then check the software. Follow the ways to troubleshoot the problem when iTunes could not backup the iPhone because the iPhone disconnected.

If you are curious about the content of your backup, refer to this guide What Does iTunes Backup Include.

Solutions 1: Check Cable

Not any cable can be used to transmit data between iPhone and PC, even if it can be used to charge your iPhone. If you don’t use the lightning cable, it would be very likely that this cable couldn’t be used to transmit data. You can change the cable and try again. If you use the original cable, please make sure that it is not so old or broken.

Solution 2: Check USB Port

You need to check the interface whether it is too loose, which might be caused by impact. If you haven’t used a USB port for a long time, it might rust or there would be dust. You should clean the USB port to make sure the normal connection. You can also change the USB port and try again.

If you use a USB hub on your computer, it would be possible that your computer can’t supply enough power to your phone. You should try to connect your iPhone with computer directly.

If the problem is caused by software, you might also have the problem that iTunes could not restore the iPhone because the iPhone disconnected. You can easily fix it, too.

Solution 3: Check Security Software

For the safety of your PC, it is likely that the connection would be blocked by your antivirus software. There has been evidence that some antivirus will cause iPhone disconnected in iTunes. You should disable it for a while and try again.


Solution 4: Check Driver

Apple Mobile Device USB driver is necessary for connecting your iPhone to computer. Right-click the Start button on desktop > select Device Manager > expand the Portable Devices Section > right-click on the device name > click Update Driver > select "Search automatically for updated driver software." Restart iTunes and try connecting your iPhone again.

Update Apple Driver

Solution 5: Restarting Device

You can reboot your PC and iPhone and try again. The background of system could be very complicated. The unseen programs would interfere with the connection. Rebooting computer could fix many issues like iPhone cannot sync error 54.

Solution 6: Check iTunes Update

To update it, you need to click Help and select “check for updates”. iTunes would give the information whether you need to update this application. Some people also said that they fixed the problem by uninstalling iTunes and reinstall it. You can try it, too.

iTunes Check For Updates

Solution 7: Check iOS Update:

Some applications would not support the old operating system, so to avoid the incompatibility, you need to update your operating system to the latest version. To check the update of your operating system, you should go to the Start menu, click the gear-icon Settings, then click Update and Security, and click Check for Updates to see whether there is a new version for windows.

iOS Software Update

If the solutions above still can’t solve your problem. You should keep the error code and screenshot contact Apple Support so that they can narrow down the problem.

Since iTunes can’t detect your device, you could try another iPhone backup software.

Quickly and safely backup iPhone via an easier way

If you met the problem of iPhone not backing up to the computer and can’t fix it, AOMEI MBackupper could be your choice. It could be used to backup photos, videos, music, contacts, and messages on your iPhone

Preview Files: Whenever you back up or restore your phone, you could preview and select the files to get what you need.

Widely Compatible: It supports most iPhone models from iPhone 4 to the latest iPhone 11 and would be perfectly compatible with the latest iOS 13. It also supports iPad and iPod Touch.

Tech Support: Still worry about problems happening? Contact the support and you would be replied with a professional answer.

How to use this simple application?

You just need at most 3 steps to backup your iPhone. Follow the steps below.

Step 1. Download and launch AOMEI MBackupper. Connect your iPhone to computer with USB and remember to tap Trust This Computer.

Step 2. Click Photos Backup or Custom Backup. You could preview and select files by clicking an icon to enter Selection. After selecting the needed files, click the orange button OK.

view files in selection

Step 3. Click on Start Backup in the lower-right corner and your task would be completed in seconds.

backup iPhone

When you would like to restore your iPhone, you could just select the task and click the arrow icon Restore. Of course, you could select the needed file by clicking an icon before restoring.


If you are told that iTunes could not backup the iPhone because the iPhone disconnected on computer, you can follow the 7 solutions to easily fix the issue.

AOMEI MBackupper will work much better than iTunes for you. It is the best iPhone to PC transfer software. You will never have the problems about compatibility.

Is this guide helpful? You could share it to help more people.