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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 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
Slide your finger upwards starting from the bottom of the screen to return to the home screen.