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.
From the Home screen, navigate: Settings > iCloud. If prompted, enter the Apple ID and password then tap Sign In. If prompted to merge, tap Merge.
If prompted to allow iCloud to use the location of your iPhone, tap an option:
Don't Allow
OK
Drag the switches left or right to on or off the iCloud options.
Mail
Contacts
Calendars
Reminders
Safari
Notes
News
Wallet
Tap Keychain then tap the iCloud Keychain switch to to turn on or off . If prompted, enter the iCloud password then tap OK.
If prompted, tap the iCloud Keychain option then follow the appropriate screen prompts. Screen prompts could include entering existing security code or creating a new one.
Use Passcode
Create Different Code
Tap iCloud (located in the upper-left).
Tap iCloud Drive. If prompted, tap Upgrade to iCloud Drive.
Tap any of the following switches to turn on or off :
iCloud Drive Allows apps to store documents and data in iCloud.
Show on Home Screen Shows the iCloud app on Home screen.
Mail
Safari
Use Cellular Data When not connected to Wi-Fi, use cellular network to transfer documents and data.
Tap Look Me Up By Email then tap any of the app switches to allow or not allow . Apps that request permissions to allow others to look you up by email appear.
Tap iCloud Drive (located in the upper-left) then tap iCloud.
Tap Photos then tap the following switches to turn on or off :
iCloud Photo Library Automatically uploads and stores entire library in iCloud to access photos/videos from all your devices.
My Photo Stream My Photo Stream is turned on when the switch is in the green position. Photo Stream automatically uploads new photos to iCloud and downloads them to all of your devices when connected to iCloud.
iCloud Photo Sharing
Tap iCloud (located in the upper-left).
Tap Backup then tap the iCloud Backup switch to turn on or off . To manage iCloud backup options, click here.
Tap iCloud (located in the upper-left).
Tap Find My iPhone then tap the Find My iPhone switch to turn on or off .
If desired, tap the Send Last Location switch to turn on or off then tap iCloud (located in the upper-left). Automatically sends location of device to Apple when battery is critically low.
Tap Share My Location then tap the Share My Location switch to turn on or off .