Device Guides
Apple iPhone 5s
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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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How to
Writing and sending iMessage
Want to write and send an iMessage? It's easy, but remember you need to set up your mobile phone for iMessaging before you can use this function.
Tap Messages.
Tap the new message icon.
Key in the first letters of the required contact.
Matching contacts are displayed.
Tap the required contact.
If the recipient can receive iMessages, iMessage is displayed.
Tap the text input field and write the required text.
See how to write text.
Tap Send.
Tap the Home key to return to the home screen.