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 Mobile network.
- Press Mobile data.
- 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 the fastest network mode, 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
- Slide your finger upwards starting from the bottom of the screen to return to the home screen.