I can't make voice calls
Select network mode
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1Find "Network mode"
- Slide two fingers downwards starting from the top of the screen.
- Press the settings icon.
- Press Mobile data.
- Press Network mode.
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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.