First, the processor is related to the overall performance of the mobile phone, just like the human brain. Only when the processor has superior performance can the mobile phone be used smoothly.
The second is the operating system. Now the mainstream of high-end machines is Android system, which has stable performance, fast running speed and strong applicability. There is also Apple's ios system, which is currently only dedicated to Macs.
Third, the running memory, the memory size is related to the running speed of the mobile phone. If the running memory is too small, the more programs your phone opens, the more stuck it will eventually crash, so the bigger the better.
Fourth, battery, battery durability is also very important.
Fifth, the camera pixel, generally speaking, the higher the camera pixel, the better the photo effect. But some depend on whether the mobile phone optimizes the camera and so on. If the optimization is good, even if the camera pixel is not very high, it can shoot a high pixel effect.