Most people are familiar with iTunes as it is not only a simple music player but a useful tool to manage music and videos in iOS devices. Whenever you plug your iPhone, iPod or iPad into computer with iTunes, iTunes will attempt to automatically scan and back up your device. Generally back up device is great in case of losing data accidently, but sometimes you may want to disable iPhone backup in iTunes due to the following reasons:
You are hurry to access something in your device but the scanning takes too long and you cannot implement any operation.
The storage space of your computer is limited and you don't want to back up all the large data and documents in iTunes.
You have already backed up the device and need to avoid erasing the former backup.
If you want to enable backups, change the terminal command to:
defaults write com.apple.iTunes DeviceBackupsDisabled -bool false
Note: Many people are used to locking their iTunes with password to keep the safety of the file. But sometimes they may forget the passcode and cannot get access to the backups. You can free to try iPhone Backup Unlocker to restore all your precious data form iTunes.
Method 3: Stop iTunes auto Backup iPhone by Using iCloud
An alternative way for stopping iTunes from automatically backing up iPhone is to set your device backup via iCloud instead. Follow the steps to complete the setup:
Connect your iOS device to your computer and then launch iTunes
Click on the "Device" button on the left of iTunes
You can see the detailed information of your device, select "iCloud" from the backup options and then press "Done" button
After that, you can see a pop-out window asking you to apply these changes, choose "Apply" to finish the process
Next time you connect your device to computer, iTunes will not sync it automatically. Instead, it will back up in iCloud , which will not hamper any operation.