How to disable WiFi on a Huawei HHG2500 router:
1. Using a computer connected to the Vodafone router, open an Internet browser and type 192.168.1.1 to login to web-based control panel.
2. Enter the username: vodafone or admin and the password vodafone or admin1234
Note: If you have already changed the password use that instead.
3. Click on the WiFi tab –> under ‘WiFi Settings’ switch the WiFi option to Off.
4. Click Save.