Here's the thread on how to block ads BEFORE they reach your phone. I assume this will work when you're using it as a hotspot but I'm not sure. At any rate, this trims off the ads so you aren't being charged for data air time for them.

DNS

“In a time of deceit telling the truth is a revolutionary act.”
― George Orwell

It's not over when you lose. It's over when you quit.