Microsoft has been careful to avoid publicising the cost to manufacturers of licensing the Windows Phone OS for each handset - but an executive from ZTE has now revealed the charge for each licence.
A week of Windows 10, holograms and Exploding Kittens on Mars
Office 2016 launching this year, touch apps coming soon
Microsoft reveals the next version of Windows 10
Introducing Windows 10 for phones
Hands on with HoloLens
Download: Windows 10 build 9926