How dO I disable my device's mobile Internet connection?

Step 1 : Open the Menu (center key) and select “Settings”.

Step 2 : Select, “Connectivity”.

Step 3 : Select “Settings”.

Step 4 : Select “Data use in home country”.

Étape 5 : Select “Wi-Fi network only” in the drop-down menu. Your device’s  mobile Internet access is now blocked.