The only piece of Microsoft tech that I actually loved, so sad it flopped. I had two Windows phones, beautiful devices. Gorgeous screens, great design, the Windows 8 tiles unironically were fantastic on mobile.
Everything was butter smooth, I never had them crash or freeze up. Zeiss cameras, they took great pictures.
But there were almost no apps for them. It was basically the Microsoft mobile office suite, and a few random ports like Evernote. Nobody bought them because there was zero ecosystem for them.