Microsoft is testing a 5-inch 720p phone. It could be Lumia 650 or Lumia 750
Microsoft may present more than two phones on October 6
The unannounced Windows 10 Phone has been spotted in the AdDuplex report and it seems that it has a 5-inch HD screen (720p) so we are probably talking about a mid-ranger.
The phone has four variants (RM-1150, 1152, 1154 and 1156) and runs Windows 10 Mobile. The exact model number has not been revealed, but we believe the phone could be the successor to the Lumia 640 or Lumia 740.
— Alan Mendelevich (@ailon) September 23, 2015
Microsoft is also believed to be working on the Lumia 850, but this particular model should have at least a Full-HD screen (1080p), so we think the device seen in AdDuplex should be Lumia 650 or 750.
Another upcoming device could the Microsoft Lumia 550 – a 4.7-inch phone with a 5MP camera, Snapdragon 210 processor, LTE, 8 GB of storage, 1 GB of RAM.
Microsoft is holding a big press-conference on October 6 to present new Windows 10 devices. Stay tuned.