The Nokia Lumia 630 is a smartphone developed by Microsoft Mobile that runs Microsoft's Windows Phone 8.1 operating system. It was announced on 2 April 2014, at Microsoft Build 2014 and scheduled to be released in July 2014. It has a Qualcomm Snapdragon 400 SoC with a quad-core processor and Adreno 305 GPU. Additionally, it has a 4.5-inch display and a 5 MP camera. The Lumia 635 is similar but 4G-compatible, lacks a dual-SIM version and comes in a different finish, while the Lumia 636 and 638 are identical, but come with 1 GB of RAM and are currently available only in China and India respectively.