Microsoft purchased Nokia's Devices & Services division, and rebranded it as Microsoft Mobile. Nokia then pivoted to telecommunications infrastructure and IoT. So there's no longer a relationship between the two companies.
Also, the Nokia smartphone brand is licensed to HMD Global.
Yeah someone at Microsoft thought they could get Windows CE to run on the popular Nokia 3210. /s
ahh, the golden days when the smartphones that mattered ran Symbian and we thought Elop was going to be our Elon.