For the most part, custom ROMs are the territory of modders and high-functioning enthusiasts, with one very important exception. Chinese manufacturer Xiaomi has the MI-One, a smarptohne sold at retail and through carriers that packs the popular MIUI custom ROM instead of stock Android. Now the MI-One is joined by a tablet sibling across a short sea: the Eden Tab, a 7-inch WiFi tablet that's being prepared for sale exclusively in Japan. Like the Mi-One, the Eden Tab will run MIUI instead of standard Android.