I can't make voice calls
Select network
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1Find "Network Selection"
- Press Settings.
- Press Mobile Data.
- Press Network Selection.
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2Select network
- Press the indicator next to "Automatic" to turn automatic network selection on or off.
- If you turn off the function, press the required network.
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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.