Report back from usage in Bay Area in California, Pokefi uses AT&T and Tmobile. Both are very slow after 2 days testing... Sometimes when it was on AT&T it was faster, but most of the times forget about refreshing your Instagram... Even Twitter pictures can take a long time to load. I decided to buy a Mifi because Freedompop turns out to be annoyingly useless in this area. Hopefully I will have better luck in Japan in a few days..