Click on the device button when it appears in the iTunes window.If asked, follow onscreen steps to choose “ Trust This Computer” or type your device passcode.If iTunes doesn’t pop open automatically, open it.
Before you start, please update iTunes to the latest version in case some errors appear during the backup process. You don’t have to rely on any third-party cloud service, and no internet connection is required. Using iTunes is a free and easy way to backup your iPhone or iPad to your computer. Backup iPhone/iPad to Computer without iTunes Backup iPhone/iPad to Computer with iTunes
