At the conference, Build 2014, which will be held in the period from second to fourth in April, Microsoft is going to introduce the operating system Windows Phone 8.1.
Both devices will use the latest version of mobile operating system, Microsoft. The first smartphone - Lumia 630 or Moneypenny - will receive a 4.5-inch screen with a resolution of 854 x 480 pixels, and in some countries it appears that Lumia 635 supports two SIM-cards.
Second smartphone will be named Lumia 930. Earlier device mentioned codenamed Martini, it is likely to be the successor model Lumia 920/925.