If you're planning a trip to tokyo , here is a quick tip. Last November, I was stressing over connection options and chose Mobal pocket wifi tokyo . It turned out to be a lifesaver. The signal didn't drop once, not even deep inside the subway stations. The setup was incredibly straightforward with no annoying paperwork, and their pricing is totally transparent—no hidden fees or surprise contracts at all. If you are an expat or a tourist who just wants a reliable device that works straight out of the box, this is definitely it.