Update iPhone 15 Before Transferring Data from Old Device

To update iPhone 15 before transferring data from old device is necessary. This article will tell you reasons. It will show you how to update iPhone 15 and how to transfer data to your new iPhone.

Clara by Clara Updated December 29, 2023
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Quick help needed! Got the new iPhone 15, should I update iPhone 15 before transferring data from my old device? Any glitches to watch out for?

- Question from Reddit

Why Do You Need to Update iPhone 15 Before Transfer

Changing to a new iPhone 15 is a joyful thing, which means you will be faced with transferring data from your old phone to your new one. Before you start transferring money, you'd better update your iOS to the latest, here are several reasons:


Ensure Compatibility: Updating your iPhone 15 to the latest iOS version ensures compatibility with the data transfer process, reducing the risk of compatibility issues.

Bug Fixes and Enhancements: Software updates often come with bug fixes, performance enhancements, and security improvements, providing a more stable environment for the data transfer process.

Access to New Features: By updating your iPhone 15, you gain access to the latest features and functionalities, enhancing your overall user experience on the new device.

In the next article, we will tell you how to update your iPhone and how to transfer data to iPhone 15 easily. Let’s start to read!

How to Update iOS on Your iPhone 15

Here are two ways you can use to update iPhone 15 before transfer. You can choose to upgrade to the latest iOS version on your new iPhone directly, or use iTunes to download the update.

★Will the Update Affect My Data?
Generally, updating iOS does not affect existing data. However, it's advisable to back up iPhone data before performing any updates to ensure its safety.

Update to the Latest iOS on iPhone 15 Directly

It is the easiest way to solve the question of “how to update my iPhone to iOS 17”, you can follow the guides to make it:

Step 1. Connect your iPhone 15 with stable internet.

Step 2. Go to Settings > Click General.

Step 3. Choose Software Update to update the iPhone.

update iphone 15 before transfer

If there is not a good Wi-Fi connection, you can learn how to update iOS without Wi-Fi on iPhone by click this link. Or keep reading and going ahead to the next way.

Download iPhone 15 Update with iTunes

Another way to finish iPhone 15 update before transfer is using iTunes. iTunes is a good option instead of updating with Wi-Fi, it helps you to check the update and you can download it to your new iOS device. Below are the steps:

On Mac

Step 1. Connect the new iPhone to the Mac > Select your device in the left panel.

Step 2. Go to General > Click on Check for update.

Step 3. Tap Download and Update > Follow the on-screen instructions to learn how to update iPhone 15.

On Windows PC

Step 1. Connect your iPhone to the PC > Download iTunes and Launch.

Step 2. Go to Summary > Tap Check for update.

Step 3. If there is any available iOS 17 update, click Download and Update.

update iphone 15 before transfer

One Click to Transfer Old iPhone to New iPhone 15

After you learn two ways about how to update iPhone 15 before transfer, we recommend a fast and easy iPhone transfer & backup tool - FoneTool. As an all-in-one iOS data management tool, FoneTool allows you to free back up iPhone and move everything from your old iPhone to the iPhone 15 with one click. Including photos, videos, contacts, messages, music, notes, Safari history, etc.

If you wish to send your data privacy data, such as Fitness records, Health, and Keychain, you can enable the backup settings to make it. Download FoneTool by clicking the below button and follow the guide to transfer iPhone to iPhone easily and quickly.

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Step 1. Plug in two iPhones to the PC > Run FoneTool.

Step 2. Tap Phone Transfer > Select the iPhone to iPhone transfer option > Click Start Transfer to begin. If you want to switch data between iPhone 15 and PC, you can click the corresponding buttons.

update iphone 15 before transfer

Step 3. Check Enable backup encryption to keep your private data safer >Then tap Start Transfer to begin.

update iphone 15 before transfer

After successfully transferring data to your new iPhone 15, you can choose to keep your old iPhone as a backup device, sell or trade it in. Ensure that you erase all content and settings before parting with your old device. You can let FoneTool to help you do it easily.

It provides a data erasing feature, you can selectively erase files or delete all data on the old iPhone permanently. Below are the steps to set up your iPhone to a new one by erasing all data via FoneTool:

Step 1. Connect the iPhone to your computer > Run FoneTool > Tap Toolbox > Choose Data Eraser.

update iphone 15 before transfer

Step 2. Select Erase all data > Tap Get Started.

update iphone 15 before transfer

Step 3. Click Erase Data button to confirm to erase all contents and settings on the old iPhone.

update iphone 15 before transfer

Wireless Share Files to iPhone 15 from Android

If you are a user who switches Android to iPhone, you can use FoneTool Android client to send data from Android to iPhone. FoneTool uses a WLAN technology, you just need to turn on Wi-Fi option without connecting to a network, then you can wirelessly share your data (Like Photos, videos, music, contacts, other files between Android and iPhone.

Here is the guide to transfer data from Android to iPhone 15:

Step 1. Download FoneTool for Android and FoneTool for iOS > Open it > Turn on the Wi-Fi option.

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Step 2. On both devices, locate Connect Device screen> To establish a connection between your devices, select Connect to iOS on your Android, Choose Connect to Android on iPhone > Use your iPhone to scan the QR code.

update iphone 15 before transfer

Step 4. On the Android phone, tap File Transfer > Choose the files you’d like to send to your iPhone > Then tap Send to start the process.

update iphone 15 before transfer

FAQs on Update iPhone 15 Before Transfer

You may also want to know more about updating your iPhone device:

1. What if I Skip the Update?

Skipping the update may result in compatibility issues and could hinder the smooth transfer of data. It's recommended to update for a seamless experience.

2. How to fix iPhone 15 stuck on software update

If you find your iPhone 15 software update not working, there are some potential causes, like incompatibility issues, unstable network connectivity, storage space insufficiency problem etc. You can use 4 easy ways to fix iOS 17 unable to check for update.

3. Is it necessary to sign in with the same Apple ID on both devices?

Yes, signing in with the same Apple ID is essential for a smooth data transfer. This ensures that your iCloud backup, app purchases, and other associated data are seamlessly transferred to your new iPhone 15.


That’s all about how to update iPhone 15 before transferring data from old device. After explaining why it is necessary to update before transferring data, this article provides 2 useful methods to you. You can update iPhone to the newest iOS on Settings, or use iTunes to upgrade your iPhone. Then you can use FoneTool desktop tool and the mobile app to transfer data to your new iPhone 15 from different devices, such as an old iPhone and an old Android.

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