You can use Wi-Fi as an alternative to the mobile network when establishing an internet connection. This way, your mobile phone doesn't use mobile data.
Step 1 of 6
Find "Wi-Fi"
Tap Settings.
Step 2 of 6
Find "Wi-Fi"
Tap Wi-Fi.
Step 3 of 6
Turn on Wi-Fi
Tap the indicator next to "Wi-Fi" to turn on the function.
Step 4 of 6
Connect to a Wi-Fi network
Tap the required Wi-Fi network.
Step 5 of 6
Connect to a Wi-Fi network
Key in the password for the Wi-Fi network and tap Connect.
If the Wi-Fi network is password protected, a lock icon is displayed next to the name of the Wi-Fi network. You can get the password from the network provider or administrator.