Xiaomi 14 Ultra: Redefining Smartphone Display Excellence Flagship Specifications and Core Innovations Xiaomi’s 14 Ultra features a 6.73-inch Quad HD+ AMOLED display crafted by TCL CSOT, leveraging next-generation C8 luminescent material. This panel achieves a peak brightness of 3,000 nits—surpassing Samsung’s Galaxy S24 Ultra (2,600 nits) and Apple’s iPhone 15 Pro Max (2,000 nits). The