I think the question you're asking is how many nanometers are used. We usually say that the mobile phone chip refers to the cpu.
Huawei nova4 was launched on December 27, 2018, using the Kirin 970 processor developed by Huawei Hesilis itself, manufactured by TSMC's 10-nanometer process, and is the world's first smartphone AI computing platform with built-in independent NPU (neural network unit).