Among my many devices, I've owned a Lumia 1520 for some time now, and it's still going strong. The only popular application people seem to want that it's not on Windows Phone, is Snapchat (I've never used it). If you're like me and all you do is call, text, browse On-line, use Facebook, Instagram, Messanger, Espn, etc. there's nothing wrong with Windows Phone. Don't get me wrong, compared to Android and IOS, Windows Mobile is way behind is terms of Application variety; however, I've used IOS, Windows Mobile, Android, etc. my Lumia 1520 has to be the smoothest phone I've ever used. Even the crappiest specs on a Windows Phone will make it run very fast and smooth. The iPhones and Samsung phones I've had would get slower the more I used them eventually needing to be cleaned. Android and IOS are the clear choice right now, but Microsoft doesn't care about losing Market share right now since they're working on a Cross-Platform OS, where you can use Desktops, Laptops, Tablets, and Phones intertwined.