the mobile phone has poor configuration, small running memory and slow processing speed. The software program has defects and poor optimization. There are too many software and junk files in the mobile phone, and the system is under great pressure. The network signal is unstable and the network speed is slow. The compatibility between software and system is low.

demonstration model: iphone 13&; & Huawei P5&; & Xiaomi 12

system version: IOs 15.4 &; & HarmonyOS 2& & MIUI 13

APP version: Zhihu 8.1.

1. The mobile phone configuration is poor, the running memory is small, and the processing speed is slow.

2. The software program has defects and poor optimization.

3. There are too many software and junk files in the mobile phone, and the system is under great pressure.

4. The network signal is unstable and the network speed is slow.

5. The compatibility between software and system is low.