Restoring an iPhone is useful if you're going to sell the device or if you want to troubleshoot it after data has been corrupted. The iPhone has a built in reset option programmed into the phone itself. With the introduction of the iCloud service, you no longer need to connect the phone to a computer to restore through the iTunes software.
Backing Up Your iPhone
Connect to the Internet through a Wi-Fi connection. A typical iPhone backup can consume a lot of data.
Tap on the "Settings" menu item. Select "iCloud" and then "Storage & Backup."
Tap on the button that says "Back Up Now" to cause the iPhone to back up its settings to iCloud, which may take several minutes to an hour or more.
Resetting the Phone
Tap on the "Settings" menu and then tap on "General."
Scroll to the bottom of the menu and tap "Reset."
Tap the button that says "Erase All Content and Settings." The iPhone will ask you to confirm this choice. Press the button marked "Erase Phone" to restore your phone to its factory settings.
Restoring From a Backup
Start up your iPhone. On a freshly restored iPhone, you are prompted to use the Setup Assistant. Do this in a place where the iPhone is connected to a Wi-Fi signal. This can consume a lot of data.
Select "Restore from iCloud Backup."
Enter your iCloud username and password information. Your iPhone will restart and begin downloading your backup from iCloud. You may be asked to choose from up to three backups on iCloud, sorted by date.
- If you plan to sell the iPhone or give it away as a gift, skip the "Restore from backup" process.
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