9 Easy Fixes for iPhone Unable to Complete Data Transfer

User Concern

“During the data transfer from my iPhone 11 to iPhone 15 Pro, I end up with 'unable to complete data transfer'. Anyone could help?”

Although Apple makes it easy to transfer data from one iPhone to another, the process can sometimes fail. It can be annoying when you're unable to complete data transfer on your new iPhone 15/14.

Don't worry, we're here to help. In this guide, we'll explore why this error happens and provide effective methods to help you complete the data transfer process successfully. Keep reading!

Why is My iPhone Unable to Complete Data Transfer?

Why is your new iPhone unable to complete data transfer? Below are some possible reasons:

• Insufficient Storage Space: If the target iPhone doesn’t have enough storage space, the data transfer process may fail.
• Network Connectivity Issue: An unstable network connection, like a weak Wi-Fi signal, can interrupt the transfer and cause errors.
• Low Battery: The battery on either the source or target iPhone is too low to complete the data transfer.
• Outdated iOS: If one of the devices is running an older iOS version, data transfer might not work smoothly.
• Data Issues: If the files are too large or incompatible with the new iPhone, the transfer process may fail.
• Unknown Bugs: Software bugs or issues with the iPhone can also interrupt the data transfer process.

How to Fix Unable to Complete Data Transfer iPhone 15/14

Now that you know the possible causes of the data transfer issue, try using the following methods to fix it.

Bring the Two Phones Closer

When transferring data wirelessly between iPhones, make sure the devices are close together. Bluetooth and Wi-Fi are needed for wireless transfers, and Bluetooth has a limited range.

If the devices are too far apart, even by a few feet, the transfer might fail. Place the two devices side by side to ensure a strong connection, and try the data transfer again.

Insert the SIM Card

You may be unable to complete data transfer because you have a new (target) iPhone, and it's not activated. You'll need a SIM card to activate the device. So, ensure to insert a SIM card into the target phone and then attempt to transfer data once more.

Turn On Bluetooth

As mentioned earlier, wireless data transfer between iPhones requires both Bluetooth and Wi-Fi. Ensure Bluetooth is enabled on both devices to establish a connection for a successful transfer using Quick Start. If you haven't already turned on Bluetooth, follow these steps to do so:

• Swipe down from the top-right corner of the screen to open the Control Center. (For earlier iPhones, swipe up from the bottom edge of the screen.)
• Find the Bluetooth icon and tap it to turn Bluetooth ON.

Charge Both Devices During Data Transfer

If you're unable to complete data transfer due to low battery life, make sure both your old and new iPhones are fully charged before starting the data transfer. Or you can keep the two devices connected to a charger during the process to avoid interruptions and ensure a smooth transfer.

Restart Old iPhone & Reset New iPhone 15

Restarting your old iPhone and performing a factory reset on your new iPhone can often solve this unable to complete data transfer ssue. This process refreshes the devices and can fix any system glitches affecting the transfer.

Reboot the Old/Source iPhone:

• Press and hold both the Volume Up button and the Side (or Power) button until the Power Off slider appears.
• Drag the slider to the right to turn off your iPhone. After about 30 seconds, press and hold the Side button again to turn your iPhone back on.

Reset the New iPhone 15:

• Go to Settings and select the General option.
• Select Transfer or Reset iPhone and then tap Erase All Content and Settings.
• Now tap Continue and then confirm the operation by following the given instructions.

Update Both iPhones

Quick Start requires iPhones to be running iOS 11 or later. If you're having trouble with the transfer, check if both iPhones meet this requirement. If they’re on an older version, update them to iOS 11 or higher. Here's how to update your iPhones:

• Launch Settings on each device and get to the General menu.
• Tap Software Update and check if there's a new version available.
• If there is one, tap on Install Now to get the new version.

Try the Wired Data Transfer

Wired data transfers are usually more reliable than wireless ones. If you're having trouble with data transfer over WiFi and Bluetooth, try using a wired connection instead. Connect your iPhones with a lightning cable and a USB 3 Camera Adapter.

Once connected, proceed with the data transfer. If you still encounter issues, check the USB cable for any damage or defects. If you find any problems, use another Apple-certified cable to connect the devices and try the transfer again.

Transfer Data via iTunes

If wired and wireless transfers fail to work, then you can try using iTunes. It's a reliable alternative method for transferring data from your old iPhone to your new iPhone. You can follow the steps below to transfer data via iTunes:

• Connect your old iPhone to your computer using a USB cable. Open iTunes and click on the iPhone icon.
• Click Back Up Now to make a backup of your old iPhone's data. When the backup is complete, disconnect the device from the computer.
• Now, connect the new iPhone to the computer. Go to iTunes and click the iPhone icon.
• Click Restore Backup. The backup of your old iPhone data will now get transferred to your new iPhone.

Fix iPhone Unable to Complete Data Transfer - No Data Loss

No matter the cause of the data transfer issue on your iPhone 16/15, FoneGeek iOS System Recovery can fix it effortlessly. This powerful and secure iOS repair tool resolves any iPhone system problem with a high success rate and without data loss. The user-friendly interface makes it easy for everyone to use. It works with all iOS versions (even iOS 18/17) and is compatible with all iPhone models. Check out more features here:

• Resolve any iPhone and iPad issues with a 99% success rate.
• Downgrade iPhone iOS or upgrade it to the latest version.
• All iOS versions (iOS 18) and all iPhone/iPad models are supported.
• Windows and Mac computers are both supported.

Steps to fixing iPhone unable to complete data transfer using FoneGeek iOS System Recovery

• Download and install FoneGeek iOS System Recovery on your Mac or Windows computer.
• Connect your iPhone to the computer and unlock it. Open the program and select "Standard Mode." Then, click "Next" to proceed.

• Once your device is recognized, FoneGeek will show the appropriate firmware version. Click "Download" to start downloading the firmware needed to repair your iOS device.

• After the download is complete, click "Fix Now" to begin the repair process. Keep your device connected, and do not use it while the repair is in progress.

Once the repair is finished, your device will restart and should function properly. You can then complete the data transfer successfully.

FAQs on iPhone Unable to Complete Data Transfer

How long does it take to transfer data to a new iPhone?

Transferring data to a new iPhone usually takes between 30 minutes and an hour, though it can sometimes take longer. The exact time depends on factors such as the amount of data being transferred, the transfer method you choose, and your internet connection speed.

Is it possible to transfer data to a new iPhone without Wi-Fi?

Yes, you can transfer data to a new iPhone without Wi-Fi. You can use a computer and transfer tools like iTunes or Finder, or use a direct wired connection between your old and new iPhone with a compatible cable and adapter.

Should I back up my iPhone before the data transfer?

Yes, it’s a good idea to back up your iPhone before transferring data. This ensures that you won't lose any important information if something goes wrong during the transfer process.

Conclusion

As you've seen, there are several ways to fix the iPhone unable to complete data transfer issue. Understanding the cause can help you choose the right solution. However, if you're unsure of the cause and want a quick fix, use FoneGeek iOS System Recovery. It's a reliable tool for resolving all types of iPhone system issues, including data transfer problems.