1. Find "Carrier"
Press Wireless & networks.
Press Mobile network.
2. Select network
To select a network automatically, press the indicator next to "Automatic" to activate the function.
To select a network manually, press the indicator next to "Automatic" to deactivate the function.
Press OK and wait while your mobile phone searches for networks within range.
Press the required network.
3. Return to the Home screen
Slide your finger upwards starting from the bottom of the display to return to the Home screen.