Well, there's not much to say about the Lumia 635, though it is a great budget phone all things considered. Decent battery life, 4G LTE connectivity, and a decent processor. It's under $50 through most retailers, so you can't really complain about what you get. It's a great entry level device or a secondary device. I considered picking one up to downgrade my phone, but I love my Nexus 5 too much.