With a 720p HD determination IPS LCD screen and Gorilla Glass protection, the Lumia 640 XL have also a lilting coloured removable back with a diverse finish to the shiny side. There is also a Micro SIM card space and a microSD card opening, which ultimately turns out to be an intelligent addition. It's still sharp; hues are precise and for the most part a pleasant place for perusing and watching videos. It's splendid also, seeing edges are solid. Outside and in great lighting conditions, the 13-megapixel Lumia 640 XL camera catches not too bad points of interest. The Lumia 640 XL accompanies a 1.2GHz Snapdragon 400 SoC with 1GB RAM. The cell phone accompanies 8GB of inbuilt storage, the phone bolsters cards of up to 128GB limit, and Windows Phone gives you a chance to introduce applications specifically to the SD card. The Lumia 640 XL accompanies on-screen buttons for navigation, rather than physical buttons, which implies exploring out of full-screen conditions - like when you are seeing a photo or viewing a film - takes an extra swipe to first raise the navigation buttons. The most prominent new feature of Lumia 640 is Cortana, Microsoft's response to Siri and Google Now.