Got the new iPhone 7 Plus and my data is draining?

I have Verizon. When I had the iPhone 6s I never had issues with my data draining. I use Wi-Fi most of the time. I don't let apps automatically update. I have Wi-Fi assist shut off. My Facebook app doesn't auto play videos without Wi-Fi on. Is there anything else I can do to stop my data from draining so badly?

It would be much easier to switch to an unlimited data plan, There's no reason to not have unlimited at this point. Anybody paying for data overages is just not that smart…