Nubia's Red Devil Mars, runs 5G at China Unicom, has liquid cooling, includes force feedback and vibration, and a graphene heat sink! The 48 million nominal megapixel Sony IMX586 camera can produce (some kind of) 8K video.
The 4G version starts at US$400 for a unit that outclasses the iPhone in many ways. Amazon sells earlier Nubia phones and worldwide marketing is beginning.
The phone is certified by the Tencent 2018TGA Grand Prix, sponsored by the 10% owner of China Unicom, games giant Tencent. Unicom was struggling, so the government brought in Alibaba and Tencent as shareholders and supporters. The joint marketing has been very successful.
450 million people watch esports and sponsors pay US$hundreds of millions to reach them. As you can see in the release below, the gaming features of the phone are remarkable.