VAIO has a Windows 10 smartphone called Phone Biz (but you probably won't be able to buy it)
The VAIO Phone Biz offers decent specs, but it's not a high-end smartphone (like Microsoft's Lumia 950 and Lumia 950 XL). The handset sports a 5.5-inch display with 1080 x 1920 pixels, and is powered by a mid-range octa-core Snapdragon 617 processor. There's 3 GB of RAM on board, plus 16 GB of storage space, and microSD card support. A 13 MP rear camera, a 5 MP front-facing camera, and a 2800 mAh battery are also included. Thanks to Windows 10, the Phone Biz comes with features like Cortana and Windows Continuum.
Just like VAIO's first smartphone (released in 2015 with Android on board), the VAIO Phone Biz will most likely not be available outside Japan. But we'll let you know if things change in this regard.
VAIO is a name that people usually associate with Sony, and with premium laptops. However, as of 2014, VAIO is no longer a Sony brand: it was sold to a Japanese investment firm, though Sony still retains a 5% stake in the company. Besides smartphones, the new VAIO continues to make and sell laptops, currently only in the US, Japan, and Brazil.
source: VAIO (translated) via Engadget, The Verge