I performed a check. I've got 2 unlimited lines, so it'll cost me an extra $40 per month. I used 140GB with both phones combined last month. I've seen it as high as 180GB. Verizon's biggest plan is 100GB combined per month and it's well over $700. Even with the additional $40, I'm still going to be around $300, so I'll be staying on my unlimited data.