Don't understand the reviews saying this is hard to set up - it isn't. It's no harder to register than a standard mobile SIM card and once up and running it works fine. It connects to my Kindle Fire automatically, after initial set up, and I can now watch prime videos on the go as well as surf the web. I've only had this item a few days but am out and about a lot with work so will be a heavy user. I plan on coming back and updating my review after a few month's use, but for now I bloody love it.