Smartphone experience before mass production

What does a smartphone experience before mass production?

1. Thermal shock test

2. Fall resistance test (drop test)

3. High temperature and low temperature test

4. High humidity test

5. plug and unplug test(10000 times)

6. Vibration test(transportation)

7. water resistance test(IP SERIES)

8. Soft pressure test(Simulate the pressure of the phone in the pocket)

9. key durability test(500000 times)

10. Sand and dust test(IP SERIES)