Today, Microsoft roll-out Windows 10 Mobile to select Windows Phone 8.1 devices. There are a lot of great new features in Windows 10 Mobile, like Continuum, Windows Hello and Cortana.

You can see the current list of Windows Phone 8.1 devices that are supported for the upgrade to Windows 10 here.

Lumia 950

This list includes a limited set of Windows Phone 8.1 devices and does not include some devices that are currently running Windows 10 Mobile in the Windows 10 Mobile Insider program. As Windows 10 delivers significant new innovations, many older devices are not able to successfully upgrade without an impact on the customer experience. Our goal is to only offer the Windows 10 upgrade to devices that we are confident can continue to deliver a good customer experience.

Lumia 550

For more information on Windows 10 for phones, go here.

To download the Windows 10 Upgrade Advisor app, go here.

Source:MICROSOFT

VAIO Phone Biz

Equipped with Windows 10 Mobile, it is the best SIM free smartphone for business use.

Qualcomm Snapdragon 617 equipped with the octa-core processor and 3GB memory, in addition to use comfortably Office apps, corresponding to be available as a desktop PC by connecting an external display "Continuum".
Body made of machined aluminum has both a high texture and robustness.

SPECIFICATIONS:-

Qualcomm Snapdragon 617 Processer 1.5 GHz (quad-core) + 1.2 GHz (quad-core)
16 GB Internal Memory+32 GB External Memory
3GB Ram
5.5-inch Full HD Screen (1920x1080)
13 MP Rear Camera+5 MP Front Camera
2800 mAh Battery
Continuum Support
Width 77.0 mm x Height 156.1 mm x Depth 8.3 mm; 167 g