Backing Up Your iPhone Data
When you connect your iPhone to your computer and launch iTunes, you can immediately see the options to backup your data to your computer or to iCloud. Note that iCloud only backs up a few important things, while backing up to your computer backs up almost everything on your device.
Select either option, and click Backup. Then come back to this and select the second option for a complete backup.
You can select both backup methods through iTunes under the Summary tab of your device and it is recommended that you run the backup process manually by right clicking on your device and clicking on Back Up.
Restoring Your iPhone Data
Once you have a backup, you can easily restore most of the important information to a new or recently restored device. All you have to do is connect your iDevice to your computer and start iTunes. Right click on your device in iTunes and select Restore From Backup. Then select the latest backup and restore it.
When times get rough, it’s time to restore factory settings. ‘Restore Factory Settings‘ will wipe out all information from the iDevice, turning it brand new, like the first time it came out of the box.
This method is the same on any iDevice.