I can't make voice calls
Select network mode
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1Find "Preferred network type"
- Slide two fingers downwards starting from the top of the screen.
- Press the settings icon.
- Press More.
- Press Mobile network.
- Press Preferred network type.
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2Select network mode
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Press the required network mode.
There may be different network modes available depending on where you are. If you set your phone to automatic network selection, it will always find the network with the highest data speed and best signal.
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Press the required network mode.
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3Return to the home screen
- Press the Home key to return to the home screen.