When does data for a iphone from Verizon reset? And what uses up data?

I just got an iPhone and I'm getting messages that say that the "usage reset date" is 10/10. Does that mean that is the day my data will be reset? Also, what uses up data? All I've been doing since I got my iPhone is texting and looking at a few things on the internet but I'm always connected to my Wi-Fi.

Yes that would be the specific date the data will be reset. Data uses incoming and outgoing calls and texts, also internet usage however W-Fi is completely free since it doesn't use your phone's data to be able to surf online.

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