How much MORE will I use on LTE?

[nepalisherpa]

Who would keep the same driving habits for a Corolla vs a Lambo?

Goodness! Analogy to OP's post!

 

[saberahul]

Other than video playback the only way your data can go up is by using more of it. Since your speed is faster, you will probably be inclined to use more data and in some cases not realize it.

 

[bwhli]

Since LTE is faster, you can look at more stuff on the web in the same amount of mine. Makes sense.