If you used two phones, one on WiFi and the other on cell data then the cell data provider wouldn’t be able to see what the WiFi phone is doing.

However: personal data and use patterns can be correlated so there are ways to track you still but not directly as a cell data service provider.

Your question is borderline incomprehensible. I’m not saying that to shame you, since it seems like English is your second language and speaking or writing in a second language is very hard.

You might get some good use out of a translation app or service. For complex and precise questions like the one you’re asking it can help with clarity.