Microsoft released a slew of Lumia lineup of devices in October, including the Lumia 950, Lumia 950 XL and the Lumia 550.
A new tweet from a credible tipster @sleaknow said that the Microsoft Lumia 650 will be the last Lumia series to carry a 5.0-inch display.<blockquote class="twitter-tweet blockquote" lang="en"><p lang="en" dir="ltr"><a href="https://twitter.com/hashtag/Lumia650?src=hash">#Lumia650</a> which has code name is Saana may be the last 5 inch Lumia of Microsoft. It's covered by metal edge as same as Lumia 640</p>— S_leak (@sleaknow) <a href="https://twitter.com/sleaknow/status/664822616310415361">November 12, 2015</a></blockquote> <script async src="//platform.twitter.com/widgets.js" charset="utf-8"></script>
Even though, the tweet did not give any configuration details out, an earlier rumor published by WMPowerUser has listed key specifications of the Lumia 650. According to website, the upcoming smartphone will feature a 5-inch display with 1280×720 pixels resolution.
Rumors suggest that the Lumia 650 will be powered by a Qualcomm MSM8909 Snapdragon 210 processor. The Lumia 650 runs on a 2000 mAh battery. The device will have support for a Glance Screen but no dedicated camera button. Surprisingly, The Lumia 650 also has no microSD card slot and cannot be expanded. It is most likely that the Lumia 650 will run the latest Windows 10 Mobile as part of the company's plan to upgrade its Lumia devices to Windows 10 mobile.
The Lumia 640, a predecessor of the Lumia 650 also has a 5" screen and a 1280x720 screen. The Lumia 640 on the other hand had slightly lower specs. The Lumia 640 sported a Snapdragon 400 SoC with quad-core processor and 1GB of RAM. Similar to the Lumia 650, the Lumia 640 lacks any support for expandable storage and comes equipped with 2,500 mAh battery.