Think of yourself:
1. Interface test: The whole phone looks very pleasing
2. Usability test: Well placed on the table, very good pick up the phone, the handset and the microphone position is correct
3. Function: Can make the phone call, can answer the telephone, can hear the other side's voice, the other side can hear my voice and the sound is clear; Volume test
4. Stability: Talk time up to multiple hours; call multiple people
5. Compatibility: To fight abroad, to call a mobile phone, to call a public telephone, to hit the mountain
6. Performance: In case of bad signal
7. When making a phone call, the other side hangs up; When I call, I hang up.
8. Press hands-free when making a call, press the volume key, press the number key
9. When you make a call, there is no electricity.
10. When you make a call, someone calls in
11. View the call time display
12. Call, no one has been answered
13. Call Transfer, etc.
How to test a phone