Does Wi-Fi use data on iPhone 5?

I have an iphone 5 and noticed my celluar data slightly increases when I use Wi-Fi. Why does it do this and how can I prevent it?

No your paranoid Cx

Maybe you have an APP that won't use Wi-Fi.

This is because your using Wi-Fi and data at the same time which makes your data to increase. To fix this simply turn off your cellular data connection then turn on your Wi-Fi and browse freely
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