Device Guides

Apple iPhone 4

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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 calls on my mobile phone

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


Turn off flight mode.Detailed instructions.

Possible cause 3:

Flight mode is turned on

Solution:

Turn off flight mode.Detailed instructions.

1. Find "Settings"
Tap Settings.
2. Turn flight mode on or off
Tap the indicator next to Airplane Mode.
Depending on the current setting, the function is turned on or off.
3. Exit
Tap the Home key to return to standby mode.

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