Upgrade iCloud Storage Space - Apple® iPhone® 4S

iCloud requires iOS 5 or later on an iPhone 4 or later ; a Mac computer with OS X Lion; or a PC with Windows Vista or Windows 7 (Outlook 2007 or 2010 or an up-to-date browser is required for accessing email, contacts, and calendars). Some features require a Wi-Fi connection. Some features are not available in all countries. Access to some services is limited to 10 devices.

To determine the device software version, refer to View Software Version .
Device Software Version iOS 5
Device Software Version iOS 6

Device Software Version iOS 5

1. From the home screen, select Settings.
   
2. Select iCloud.
   
3. If prompted, enter the Apple ID and password then select Sign In.
   
4. Select Storage & Backup.
   
5. From Storage, verify the Total Storage and Available Storage.
   
6. Select Buy More Storage.
   Apple iCloud provides 5GB of free storage.
   
7. Select the upgrade option then select Buy.
   • 10GB
   • 20GB
   • 50GB
   
8. If prompted, enter the Apple ID and password then select OK.
   
9. Select Continue.
   
10. Verify the Apple account payment information then select Done.
    

Device Software Version iOS 6

1. From the home screen, select Settings.
2. Select iCloud.
3. If prompted, enter the Apple ID and password then select Sign In.
4. Select Storage & Backup. 
5. From Storage, verify the Total Storage and Available Storage. 
6. Select Change Storage Plan.
   Apple iCloud provides 5GB of free storage. 
7. Select the upgrade option then select Buy.
   • 10GB
   • 20GB
   • 50GB 
8. If prompted, enter the Apple ID and password then select OK. 
9. Select Continue. 
10. Verify the Apple account payment information then select Done.