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There may be different network modes available depending on where you are. The network mode influences the data speeds your phone can achieve.
1. Find "Service selection"
Press the Navigation key.
Select Network settings.
Select Service selection.
2. Select network mode
Select 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.
3. Return to the home screen
Press Disconnect to return to the home screen.