This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com</br>An uncompromised Windows Phone 8.1 experience with fast quad core processor, bright colorful design with changeable shells and 4.5inch ClearBlack screen.</br>Lightning-fast 4G LTE makes it quicker and easier to connect with the people and things you love online</br>The same apps and experiences as high end Lumia's including free Global maps and navigation, free Nokia MixRadio streaming, and Nokia Camera</br>Live Tiles for instant information from apps, one easy swipe to important notifications with Action Centre, Microsoft Office, OneDrive, and faster ways to connect with Word Flow and Whatsapp and Instagram</br></br>Product Description</br></br>Powered by the new Windows Phone® 8.1 operating system and an advanced quad core processor, the Lumia 635 delivers blazing fast 4G LTE speeds for a superior experience at an affordable price. Introducing Windows Phone 8.1. See all of your chats, social updates and settings in the all-new Action Center. Personalize your start screen with your own background photo and watch your live tiles come to life in real-time. And the Word Flow keyboard anticipates every word you write, speeding up your conversations with friends. Cortana: Your Truly Personal Assistant Meet Cortana - the assistant with a personal touch. She'll learn about your specific interests and the things you care about the most, make recommendations and anticipate your needs. From warning you about impending road conditions to reminding you to pick up flowers for a loved one's engagement, she'll keep you close to the people that matter most.</br><br/>http://www.amazon.com/gp/product/B01N48E1J1