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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. Find "Wi-Fi"
2. Turn on Wi-Fi.
Press the indicator next to "Wi-Fi" to turn on the function.
3. Connect to a Wi-Fi network
Press the required Wi-Fi network.
Press Password and key in the password for the Wi-Fi network.
You can get the password from the network provider or administrator.
4. Return to the home screen
Press the Home key to return to the home screen.