I bought a Windows Phone, back when, for OneNote and because I could buy outright an unlocked phone, go to the local Walmart, purchase an Unlimited Talk, Text and Data monthly plan; paying ½ the price of having to go through a major carrier (I just can’t justify paying $100-200.00/month for Internet and Cell service, just like I can’t justify paying that outrageous fee for cable…won’t do it – it’s the principle).
“I believe” Microsoft realized in 2016 that their current mobile OS wasn’t feasible for the future, therefore, decided to put their energy to an OS that will be innovative, 5G compatible and able to access all/most apps, AND SECURELY! (right now, Yes, you can get apps on iOS and Android, but they seem to sell your data to anybody that will pay for it, or give it up to bad actors…sorry, not interested in this business plan either).
“I think” when the realization comes to fruition, MS will enter back into the mobile category with an vengeance and an impressive entry, and people will look up and notice.
ALSO: it should be noted that my 950XL is getting better and better with its ability to connect to Bluetooth Devices, so MS is doing ‘something’ behind the scenes.