If you consistently do more than rides per month, you have nothing to worry about — you can get the free equipment and enjoy it for as long as you like. The Galaxy Tab A series has been due for a refresh for a while now and Samsung did exactly that with the latest addition to its affordable tablet range — the Samsung Galaxy Tab A So the Kindle hardware business probably generates several billion dollars of revenue, but, at best, Amazon probably breaks even on these sales. Android or a special OS??