In most cases, when iPhones encounter the 4013 error, it's due to the charging cable being used. Non-genuine accessories, counterfeit or low-quality charging cables, and other factors such as iTunes errors or firmware issues can also lead to this problem. Therefore, to fix error 4013 on iPhone, you need to address all these factors first.
Fixing Error 4013 on iPhone during Firmware Upgrade and Restore
How to Fix Error 4013 on iPhone
Step 1: Replace the connecting cable of the iPhone with a genuine one from the manufacturer when connecting to the computer.
Download: iTunes
On the main interface of the website you just accessed, click on the arrow icon to download the software to your computer.
After successful download and installation, restart your computer.
Step 3: Connect your iPhone to the computer using the genuine cable you prepared in step 1 after the computer has been restarted.
On your iPhone, you need to put the device into DFU mode.
+ For older iPhone models (iPhone 7Plus and below): Press and hold the volume down button and the power button simultaneously for about 10 seconds. Then release the power button but continue holding the volume down button until the iTunes application on the computer notifies that it has detected the iPhone device, indicating that you have successfully entered DFU mode. In this mode, the iPhone screen will display black.
+ For newer iPhone models (iPhone 8 and above): Quickly press the volume up button, then the volume down button, then the power button until the iPhone screen turns off completely. Then press the volume down button and the power button simultaneously. After about 5-10 seconds, release the power button while still holding the volume down button until the iTunes application on the computer notifies that it has detected the iPhone device, indicating success.
Step 4: Now on the iTunes application on the computer, proceed to select Restore iPhone to restore the device.
Next, select Check for Update and click on Update to install the latest iOS version for the iPhone.
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Here is how to fix error 4013 on iPhone that Mytour.vn wants to share with you. Refer to the article summarizing common errors when using iPhone for more troubleshooting methods. Wish you success in following the steps above.