If you are planning to upgrade your iPhone, iPad, or iPod Touch to iOS 8, make sure you back up data such as iPhone contacts, notes, photos, songs, videos and playlists in advance. Upgrading to iOS 8 from an earlier iOS version will result in the deletion of all iPhone multimedia tracks as well as photos which are not within the Camera Roll. To back up iPhone, iPad, or iPod Touch data prior to upgrading to iOS 8, refer to this tutorial:
How to back up iPhone data
Backing up iPhone settings
Updating to iOS 8 will restore the iPhone settings to their factory defaults. Before choosing to upgrade to iOS 8, be also sure to back up your iPhone settings via either iTunes or iCloud.
back up via iCloud
If you are running iOS 5 or later, you can back up your iPhone settings, app data and other information (excluding songs and videos in the Music app) before updating to iOS 8 via using iCloud. To back up iPhone, iPad, or iPod Touch settings and data via iCloud do the following:
Go to Settings > iCloud
Tap “Storage & Backup” at the bottom
Next tap “Backup Up Now” and stand-by until the iPhone, iPad, or iPod Touch data is backed up to your iCloud account
back up via iTunes
If you have not set up an iCloud account, you can also back up the iPhone, iPad, or iPod Touch via iTunes on the computer.
WARNING: To avoid “Automatic synchronization” of your iPhone, iPad, or iPod by iTunes click and keep the Shift and Ctrl keys pressed while you open iTunes. Please refer to this FAQ article.
To back up iPhone data via iTunes, open iTunes and connect your iDevice. Once it appears in the main program window, right click and select “Back Up”.
iOS backup and restore without iTunes
iTunes takes up too much space and recourses on your computer? You can now make full-featured backup and restore of your iOS device to PC without the need for iTunes via using the free CopyTrans Shelbee. Here’s all you need to know about CopyTrans Shelbee:
Learn more about CopyTrans Shelbee