I can't make voice calls
Select network mode
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1Find "Preferred network type"
- Slide your finger downwards starting from the top of the screen.
- Press the settings icon.
- Press Network & Internet.
- 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 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
- Press the Home key to return to the home screen.