Device Guides
Apple iPhone 5c
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iOS is the operating system software installed on your iPhone. To find out which version you have: Tap Settings, Tap General, Tap About, and view the version number.

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I can't send and receive MMS
This troubleshooting guide will take you through a number of possible causes
to help you find a solution to your problem.
Turn on mobile data.
Possible cause 3:
Mobile data is turned off on your mobile phone
Solution:
Turn on mobile data.
1. Find "Cellular"
Tap Settings.
Tap Cellular.
2. Turn mobile data on or off
Tap the indicator next to "Cellular Data" to turn the function on or off.
3. Return to the home screen
Tap the Home key to return to the home screen.