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4013

Error 4013: iPhone iOS Error

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Updated March 17, 2026

Quick Fix

1. Disconnect and reconnect the USB cable. 2. Update iTunes or macOS to the latest version. 3. Restart both iPhone and computer. 4. Try a different USB port or cable.

What it Means

Error 4013 signals a communication failure between the iPhone and the computer during backup or restore. It usually happens when the device cannot establish a stable connection, often due to hardware or software issues.

Possible Causes

  • 1
    Faulty or non‑Apple USB cable
  • 2
    Outdated iTunes or macOS
  • 3
    iPhone not trusted or locked
  • 4
    Corrupted backup files
  • 5
    Hardware problems on the iPhone or computer

How to Fix

    Step-by-Step Solutions

    1. Check USB Cable and Port

      Ensure the cable is Apple‑certified and not damaged. Try a different port on the computer to rule out port issues.

    2. Update iTunes and macOS

      Outdated software can cause compatibility problems. Update to the latest versions to get the newest drivers and fixes.

      softwareupdate --install --all
    3. Restart Devices

      A simple reboot clears temporary glitches on both the iPhone and the computer, re‑establishing a fresh connection.

    4. Reset Network Settings

      Resetting network settings removes corrupted Wi‑Fi and VPN data that might interfere with the backup process.

      Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings
    5. Delete Corrupted Backup

      If the backup file is corrupted, delete it from iTunes or Finder and start a new backup.

    6. Try a Different Computer

      Testing on another machine eliminates computer‑specific driver or configuration issues.

    Commands You Can Try

    softwareupdate --install --all
    sudo killall -HUP com.apple.iTunes

    Technical Details

    Error TypeRuntime
    SeverityMedium
    Platformiphone-ios-errors
    App VersionAll

    Still stuck?

    Pro tips

    • Keep both devices plugged into power during backup.
    • Avoid using third‑party cables or adapters.
    • Use iCloud backup as an alternative if USB fails.

    If the error persists after trying all steps, especially if the iPhone shows other hardware symptoms, contact Apple Support or visit an Apple Store for professional diagnosis.

    If these solutions didn't help, try searching our database for similar issues.

    Contact Support