At first glance, many would think this classic Game Boy was somehow running the Android OS, but after closer inspection, we find that XDA member/tinkerer, flexoduss, is simply looking for a way to cram his Motorola Flipout into a Game Boy shell.
More than just a retro style cashing, the end goal is to make the device fully operational from inside the Game Boy, complete with functional Game Boy hardware buttons (for playing Game Boy emulators the right way). If anyone can lend this aspiring young man a helping hand, link to the original thread has been provided below.
SOURCE: external microphone (gameboy phone) - xda-developers
Game Boy Runs Android: Best Hack Ever? | PCWorld