Why does my iPad use so much of my Mifi data?

[iMore Question]

Why does my iPad use so much of my Mifi data

Mifi over data usage,how do I close apps on iPad Air 2.

 

[Bigeric23]

Re: Why does my iPad use so much of my Mifi data

Here you go:

How to quit or kill multiple apps at once on your iPhone or iPad | iMore