Yes, thats finally an option since a few years back. It was not available before, and used to be too slow in comparison to WIFI. Yes, 11 years, but finally settled down since last year.
I actually got an international data plan from tmobile that is supposed to be partnered with local data carriers in 120 countries. Supposedly it works fine with tablets and mobile. I wonder if this will be sufficient since I am not a day trader.