Resolve USB-related alerts in iTunes
If you see an "iPhone has timed out" message or your device unexpectedly disconnects when you sync it with iTunes, there could be an issue with the USB cable connection to your device.
Follow the steps in this article if your iPhone, iPad or iPod touch disconnects during syncing or you experience one of these issues:
You see a "The connection to the iPhone was reset" message when syncing or backing up your device.
You see an "iPhone has timed out" when syncing.
You see iTunes error 2001-2011 while updating or restoring.
An "unknown error" occurs when syncing.
Learn what to do if iTunes doesn't recognise your device.
Check connections
Try these steps to check the connection between your device and computer. Before starting each step, make sure your iPhone is on the Home screen. You may only need to complete one of these steps to resolve the issue, so test your connection after trying each step.
Disconnect your device, then reconnect it.
See if the cable connection at the device or computer has come loose or been unplugged.
Make sure the device isn't connected to a third-party battery pack or case, a USB-hub or to your keyboard. Connect your device directly to one of your computer's USB ports.
Restart your iPhone, iPad or iPod touch.
Check for software updates.
On your Mac: Update your software.
On your PC: get updates from Microsoft.
Find out what to do if your iOS device or iPadOS device displays the "Connect to iTunes" screen.
If you're using an accessory or third-party cable to connect your device, try using an Apple cable instead.
Disconnect all other USB devices from your computer, except for your keyboard and mouse. Then reconnect your iOS device. If the issue has been resolved, reconnect the other USB devices one at a time. Make sure your iOS device is still recognised by the computer after adding back each device.
If one of these steps resolves the issue, but it later returns, make sure you haven't changed how the device is connected. For example, check to see if you plugged the device into a specific accessory or used a specific cable that reintroduced the issue.
Get more help
Learn what to do if you see an error when you update or restore your iPhone, iPad or iPod.
If you continue to see an error when connecting your device, contact Apple Support.
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