Samsung’s first Windows Phone “Mango” device has been listed by standards body Bluetooth SIG as the South Korean electronics giant prepares to lead the pack when Mango phones begin launching this fall. Details surrounding the smartphone are not available for the time being, though the model number SGH-i937 has already been confirmed as the Windows Phone-touting successor to the Samsung Focus, which carried the model number SGH-i917. speculates that the device could feature a case and specs similar to the Galaxy S II — Samsung’s fastest-selling smartphone of all time — but that speculation appears baseless. It looks like Samsung will have stiff competition from Nokia when Mango phones finally hit store shelves this fall, so Galaxy S II-like hardware would definitely help the manufacturer’s cause.