You know, we are almost at the one year anniversary since Nokia merges with Microsoft to become what we now known as Microsoft Mobility. And since then, the company has been focused (almost exclusively) to entry-level device, and this is just another proof of it. Yesterday, we got some lease of a RM-1109 from Microsoft, which I prematurely assume to be the Lumia 1330. That big battery turn out to be for a Lumia 640.

The site that found the RM-1109 records has tracked down another piece of document, indicates that the device bears the code name is the successor of the Lumia 630, which was announced almost a year back. Now, seeing as the Lumia 640 is just a dual-SIM variant of the single-SIM Lumia 635, this device is in the similar division. The Lumia 640 is a dual-SIM device.

We also got another source from Hungary, who obtains some…