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You can use Wi-Fi as an alternative to the mobile network when establishing an internet connection. This way your phone doesn't use mobile data.
1. 1. Find "WLAN"
Press the Navigation key.
Select Wireless and Network.
2. 2. Connect to a Wi-Fi network
Select the required Wi-Fi network.
Key in the password for the Wi-Fi network and press the Navigation key.
You can get the password from the network provider or administrator.
3. 3. Return to the home screen
Press Disconnect to return to the home screen.