As the official application released by Apple, iTunes is always the first choice for iPhone, iPad and iPod users to manage their files on computers. Apple users can take advantage of iTunes to back up files or restore backup for their iOS devices when they want to update their iPhone, iPad and iPod to the latest version of iOS 9.3. Or people want to sync iPhone with iTunes to transfer files from iTunes library to their devices. Actually there are several methods in the post that will show you how to sync iPhone with iTunes.

Part 1. Sync iPhone with iTunes Directly and Restore Backup on iPhone via iTunes

When it comes to syncing iPhone with iTunes, most Apple users will take iTunes as the first choice. There are three methods that you can make use of to sync iPhone with iTunes: Using USB cable/Wi-Fi or transfer purchased files.

Method 1. Sync iPhone with iTunes via USB Cable

1. Open iTunes. Make sure that you have the latest version. Then connect your iPhone with USB cable to your computer.

2. Click on your device. After clicking on your device, tabs appear on the left side of the iTunes window under Settings.

3. Turn on syncing. You can turn on syncing for Music, Movies, TV Shows, Podcasts, Books, Audiobooks, Tones, Photos, and Info.

4. Sync your content. Click the Sync button in the lower-right corner of the screen to sync your content.
Sync iPhone with iTunes via USB Cable

Method 2. Sync iPhone with iTunes via Wi-Fi

1. Open iTunes. Make sure that you have the latest version. Use the USB cable that came with your iOS device to connect it to your computer.

2. In iTunes, find and then click your iOS device. On the Summary tab, select “Sync with this [device] over Wi-Fi.”

3. Click “Apply” button, then disconnect the USB cable. Choose which items you want to sync, then click sync.
Sync iPhone with iTunes via Wi-Fi

Method 3. Sync Purchases from iPhone to iTunes

Syncing iPhone with iTunes by transferring purchased files to iTunes is another method. If you have some purchased music in you iPhone from iTunes, you will be allowed to sync them from iPhone to iTunes. Check the following guidance of transferring purchased music from iPhone to iTunes:

Step 1. Plug iPhone into the computer via the USB cable. iTunes will launch automatically, if not, double-click the icon on the desktop to start it.

Step 2. Click “File” at the upper left corner of the window of iTunes. Then click “Devices > Transfer Purchases from My iPhone”.

Step 3. iTunes may ask for your Apple ID to start the sync. After the sync, you will get the purchased music files in your iPhone.

Note: When you connect iPhone to computer and launch iTunes, the software may ask you whether you want to “Sync and Erase” the iPhone. Click “No” if you don’t want to lose the files in your iPhone.

Restore Backup on iPhone via iTunes

In fact, if you have backed up iPhone to computer, you can also restore to another iPhone. To achieve this aim, you need to connect another iPhone into computer and then click on “iPhone icon > Settings > Summary> Restore Backup”. A panel will pop up to direct you to choose the backup you have created. In the end, you need to click on the “Restore” button to begin to restore to another iPhone.

The procedure to backup and restore backup on iPhone only calls for a few clicks. However, this process will erase data, which is not so satisfying. Therefore, the next two parts will show you how to sync iPhone to iTunes without erasing.

Part 2. Sync iPhone to iTunes with iPhone Transfer Tool

If you would like to sync iPhone with another iTunes library without erasing data, you can check out this solution. Actually, this process tells you how to transfer purchases on iPhone. Now, let’s take a look on how to make it.

1. Connect your iPhone with computer and then you can launch iTunes on PC. Make sure your iTunes is the latest version. After that, you need to go to “Edit > Devices” and check “Prevent iPods, iPhones, and iPads from syncing automatically” to prepare to sync iPhone with another iTunes library without erasing data.

2. Afterwards, you need to head to the iTunes Store and select “Authorize This Computer”. Type in your Apple ID that you have used to buy files on your iPhone. Then you need to tap “File > Devices > Transfer Purchases from ‘device name’ ”.

Transfer Purchases from device

3. Afterwards, you need to click on the button of “Sync” to initiate a new sync between your iPhone and the computer.

This process will sync iPhone with another iTunes library without erasing data. If you would like to take advantage of a powerful program to solve how to transfer iTunes library to iPhone without wiping, you can continue to read the following part to achieve your aim.

Part 3. Sync iPhone to iTunes with iPhone Transfer Tool

If you still have some non-purchased files in your iPhone that is impossible to sync them from iPhone to iTunes, you will need the third-party software to sync non-purchased files from iPhone to iTunes. Leawo iTransfer, one of the best iPhone, iPad and iPod transfer software, which enables users to transfer various of files among iOS devices, iTunes and computers, like apps, music, movies, TV shows, ringtones, ebooks, photos, Camera Roll, contacts and text messages, etc. The following guidance will show you how to sync iPhone to iTunes without erasing. You can free download the software then have a try.

Download Windows Version
Download Mac Version

Step 1. Run Leawo iTransfer and connect iPhone to computer with USB cable. The software will recognize your iPhone.

Step 2. Click the name of iPhone and choose a library. The contents of this library will display in the right part of the window.

Step 3. Select the files you need by holding Ctrl/Shift key, and click the transfer button at the right bottom. Or right-click a selected file and choose Transfer to > iTunes.

Step 4. After selecting files, you’ll see a pop-up dialog. Check Transfer to List and choose iTunes as a target. Then click Transfer Now to start syncing iPhone with iTunes.

After the transfer finishes, Leawo iTransfer will successfully help you to sync iPhone to iTunes without erasing. You can make use of iTunes to transfer purchases from iPhone to iTunes. And you can also take advantage of Leawo iTransfer to transfer both purchased items and non-purchased items from iPhone to iTunes without any loss of data. And you don’t need to worry about the erasing of data when you sync iPhone to iTunes by using Leawo iTransfer. Also Leawo iTransfer allows users to copy various kinds of files from their devices to computer for backup. If you want to know how to backup iPhone, please check here.

Part 4. iPhone Won’t Sync with iTunes

Do you find that your iPhone does not sync with iTunes after you update your iPhone to iOS 9.3? Don’t worry, there are five methods to help you fix iPhone sync error on your own.

Method 1. Update iTunes to the Latest Version

Updating iTunes to the latest version can fix some issues, including iPhone not syncing iTunes issue. If you are a Mac User, open the software, choose iTunes from the menu bar and select Check for Updates. If you are a Windows User, open the software, choose Help from the menu bar and select Check for Updates.

Method 2. Relaunch or Reinstall iTunes on Your Computer

When iPhone won’t sync with iTunes, quit iTunes and run the software again. Or remove iTunes from your computer and install the latest version. This solution is easy, but it may be useful for you.

Method 3. Try Another USB Port or USB Cable

Sometimes, why your iPhone won’t sync with iTunes is caused by bad USB port or USB cable. All you need to do is checking whether your USB port or USB cable is bad and switch the bad one to a new one if the USB port or USB cable is indeed bad.

Method 4. Restart Your Computer and iPhone

Also you can solve the iPhone sync problem by restart your PC or Mac, as well as your iPhone. Press and hold the sleep/wake button, and drag the slider to turn iPhone off. When the phone is off, again press and hold the sleep/wake button until the Apple logo shows up.

Method 5. Use the Third-party Software

You can also use the third-party software to sync iPhone to iTunes. Leawo iTransfer is powerful for this issue. Also the software enable users to transfer files among iOS devices, iTunes and computers. Click part 2 see how to sync iphone to iTunes with Leawo iTransfer.