Is your iPhone X eating through data?

I purchased the new X to go on a trip at the end of November. I was out of the country and off my data plan for 2.5 weeks. Now that I’m back and on my plan, Between Dec 16 and December 25, I have managed to use 6GB. I am not using the phone any differently than my prior one. WiFi assist is not on and I have low battery mode in most of the time to cut out background apps. This amount of data does not make sense. Has anyone else experienced a dramatic increase in their data usage simply by upgrading to X?