US social network giant Facebook said Monday it has surpassed 100 million users a month using an application designed for \"simple\" mobile phones widely used in developing nations. Launched two years ago, the \"Facebook For Every Phone\" app enables people to connect \"no matter what kind of mobile device they use,\" the company said in a statement. \"Today, millions of people in developing markets like India, Indonesia and the Philippines are relying on this technology to connect with Facebook, without having to purchase a (more expensive) smartphone,\" Facebook said. The application works on more than 3,000 different types of low-cost phones \"from almost every handset manufacturer that exists today.\" The app \"includes Facebook\'s most popular features, such as News Feed, Messenger and Photos,\" and allows first-time users to create a new account and find old friends. As of late March, Facebook reported having 751 million customers using accessing their site on mobile devices, up a whopping 54 percent from one year earlier.