Today , Nokia has announced three new Nokia Lumia devices (Lumia 930 , Lumia 630 and Lumia 635) at the Microsoft Build Conference 2014 in San Francisco. During the Build Conference , Stephen Elop showed the new Lumia devices and also announced its price and the availability date . Nokia Lumia 630 comes with 2 variants . One with a single SIM and other with the dual SIM facility . This is an something similar or update to the Lumia 520 device which is one of the top selling smartphones in many countries. Nokia Lumia 630 is a 3G phone where as the Lumia 635 is a phone that supports faster LTE. Both the smartphones Lumia 630 and Lumia 635 features 1.2 GHz quad-core Snapdragon 600 processor and runs on Windows Phone 8.1 . The device will be launched in Asia and India sometime in May . The Lumia 930 is expected to be available sometime in June.