The Lumia RM 1090 is rumored to be the codename for the first Microsoft Lumia branded smartphone featuring the latest Windows Phone 8.1 OS. In size, it will measure 140.2 x 72.45 x 9.32mm and weigh 146g. The Lumia RM 1090 will feature a 5-inch HD display with resolution of 1280 x 720 pixels. It will be powered by 1.2GHz Snapdragon 200 processor and 1GB RAM. For multimedia, the Lumia RM 1090 will pack a 5 Mega Pixel rear camera and VGA front facing camera for Skype video calls.
The Lumia RM 1090 will come pre-installed with Windows Phone 8.1 OS. For storage, it will come with an 8GB built-in memory and micro-SD card slot. In addition to that it comes with a 1900mAh battery. Rest of the specifications are still unknown but Microsoft is expected to launch RM 1090 at a press event on November 11th. Stay tuned for more updates.
Update : Microsoft Lumia 535 Specs and Images Leaked Ahead of Official Launch