Device Guides

Apple iPhone 4S

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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 make voice calls

This troubleshooting guide will take you through a number of possible causes
to help you find a solution to your problem.

Turn on automatic network selection.

Possible cause 3:

You've turned on manual network selection and are out of range of the selected network


Turn on automatic network selection.

1. Find "Carrier"
Tap Settings.
Tap Carrier.
2. Choose option
Choose one of the following options:
Select network manually, go to 2a.
Select network automatically, go to 2b.
3. 2a - Select network manually
If automatic network selection is turned on:
Tap the indicator next to "Automatic" until the function is turned off.
Your mobile phone will search for networks within range.
Tap the required network.
Your display will tell you if you've access to the network you've chosen.
4. 2b - Select network automatically
Tap the indicator next to "Automatic" until the function is turned on.
5. Return to the home screen
Tap Settings to save the setting.
Tap the Home key to return to the home screen.

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