RedMagic has launched multiple phones with active cooling, but one issue with such a cooler is that you don't get an IP rating. Well, xMEMS wants to change that with its first µCooling chip, which also happens to be the world's smallest fan.https://www.notebookcheck.net/xMEMS-intros-the-world-s-smallest-fan-with-an-IP58-rating-making-active-cooling-more-feasible-in-flagship-phones.877945.0.html
Impressive,hope when one is in a hot ambient environment it doesn't pull that already hot air to 'cool' the hot chips.