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
Using Touch ID on my mobile phone
You can set your mobile phone to use your fingerprint as phone lock code or to authorise iTunes or App Store purchases.
Tap Settings.
Tap Touch ID & Passcode.
Tap Add a Fingerprint....
Follow the instructions on the display to add a fingerprint.
Tap Continue.
Key in a phone lock code of your own choice.
Key in the same phone lock code again.
To use Touch ID as phone lock code:
Tap the indicator next to "iPhone Unlock" until the function is turned on.
To use Touch ID to authorise iTunes or App Store purchases:
Tap the indicator next to "iTunes & App Store" until the function is turned on.
Tap Settings
Tap the Home key to return to the home screen.
Touch the Home key to scan your fingerprint.