1 Find "Network operators"
Slide two fingers downwards starting from the top the screen.
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Press the settings icon.
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Press More.
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Press Mobile networks.
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Press Network operators and your phone will search for networks.
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2 Select network automatically
Press Search mode.
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Press Automatic.
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3 Select network manually
Press the required network.
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4 Return to the home screen
Press the Home key to return to the home screen.
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