System 7 or “Mac OS 7″ is the latest legacy OS on a cell phone thanks to the guys at Mac OS iPhone. It is pretty surprising that every geek with a lot of time on their hands is deciding the coolest thing to do right now is install legacy operating systems to cell phones.

Who ever thought that Windows 3.1 would be installed to a cell phone? It took Marcinprv at FrazPC a full day to do it but he was able to get installed to his Nokia N95. The phone itself is running Symbian but he was able to install DOSBox and then Windows 3.1.