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Set up your mobile phone for internet
Turn data roaming on or off
You can set your mobile phone to use your fingerprint as phone lock code or to authorise iTunes or App Store purchases. To use Touch ID, you need to turn on the phone lock code.
Find "Touch ID & Passcode"
Tap Touch ID & Passcode.
Tap Add a Fingerprint... and follow the instructions on the screen to add your fingerprint.
Tap Continue. If you haven't previously selected a phone lock code, key in a code of your own choice twice.
Select Touch ID settings
Tap the indicator next to "iPhone Unlock" to turn the function on or off.
Tap the indicator next to "Apple Pay" to turn the function on or off.
Tap the indicator next to "App and iTunes Stores" to turn the function on or off.
Return to the home screen
Tap the Home key to return to the home screen.
Tap anywhere to dismiss
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