To start using the Yealink WF40 Wi-Fi dongle, follow the steps below to proceed:
1. Disconnect the Ethernet cable to enable Wi-Fi connectivity.
2. Insert the WF40 USB dongle into the USB port at the back of the phone.
3. You will be prompted to scan and connect to available Wi-Fi networks. Alternatively, you can do this manually by going to Menu > Settings > Basic Settings > Wi-Fi.
4. Select Available Networks, and press OK.
5. Select the desired Wi-Fi network and press Connect.
6. Enter the password, and press OK.
Allow a few seconds for the phone to connect to your Wi-Fi network.