Is a high-end smartphone that features a 6.67-inch 1080x2340 800-nits HDR10+ 120Hz AMOLED display, a Qualcomm Snapdragon 865 chipset, 8/12/16 GB of RAM, 128/256/512 GB of storage and a quad camera setup. Interestingly Xiaomi says that the phone includes the world's first mass produced graphene battery - in addition to graphene thermal dissipation films.

Xiaomi Mi 10 Ultra photo

The Mi 10 Ultra is now shipping in China starting at around $770.

OLED type: 

6.67-inch 1080x2340 120Hz AMOLED

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Cambridge Isotope Laboratories - Deutreated Reagents and High-Purity Gases for OLEDsCambridge Isotope Laboratories - Deutreated Reagents and High-Purity Gases for OLEDs