You need to go to Japan more often. I worked quite a lot with NTT DoCoMo and they had amazingly useful games and apps. Everything from a bank machine locator to physical vending machine purchases (with NFC).<p>They had motion sensor support in J2ME devices that they used mostly for fishing&#x2F;golf games circa 2003-2004 (don&#x27;t hold me at the dates my memory is the gray equivalent of Swiss cheese).<p>Anyway, J2ME had a lot of levels CDC was pretty much Android equivalent but it didn&#x27;t have GUI API on top of it because Sun disallowed MIDP on top of CDC and didn&#x27;t offer anything other than AGUI which nobody used... I can go into endless details here but generally, the reason J2ME failed was that it was a tool built in 1999 with a single moderate update in 2004 and nothing else!