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Personal hot spots and data usage
My son was using his personal hot spot to watch shows and movies. We received notice from Att that our data usage was up to 90% of allowed data on our plan. How does this happen? I thought connecting to a hot spot didn't use your data, especially if there is a wifi connection.
He does this every few months and the last few times it did not use data like it did this time. I'm confused as to how a hot spot actually works. Any information would be helpful.