Help with samsung link internet problems?

i have been using my samsung link for about 4 months now and i sometimes accidentally put it on the internet because it hits it by accident. on the main screen the two main options are contacts and web. Its the top left and top right buttons that go to these settings. i DONT have a internet plan on my phone and i accidentally leave it on for a while and dont notice it like 30 mins does anyone know how to change it on the main screen from saying web to something like messaging
 
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