The technical staff of serviceiphones, before and after each service, carefully examines the following 24 basic functions to ensure that the iPhone operates flawlessly:

1. Charging function check
2. Earpiece function check
3. Speaker function check
4. Microphone function check
5. Speakerphone function check
6. GSM antenna function check
7. 3G antenna function check
8. Wi-Fi antenna function check
9. Telephone call function check
10. Rear camera function check
11. Front camera function check
12. Vibration motor function check
13. Motherboard check
14. Digitizer check
15. LCD screen check
16. Battery check
17. External parts, covers check
18. Humidity examination
19. Temperature control
20. Home button function check
21. Volume button function check
22. Mute button function check
23. Power button function check
24. Proximity sensor function check