1. To show IMEI Number *#06#2. To enter General test mode: *#0*#3. To show Phone Utility: *#7284#4. To self test each component of your phone.: *#7353#5. To enable disable long press shutdown: *#7594#6. To do Audio, packet, loopback test: *#0283#7. To do Real Time Clock Test: *#0782#8. To do Vibration test: *#0842#9. To show WLAN MAC address and PS mode: *#232338#To reset total call time: *#22558463#10. To Show HW Version *#2222#11. To Show Camera Firmware settings *#34971539#12. To Show Sysdump, log files: *#9900#13. To Show Battery Diagnostics: *#0228#14. To Show Function testing: *#7353#15. To Show Service Mode Menu: *#197328640# or *#0011#16. To Show Camera Firmware Menu: *#34971539#17. To unlock PUK code (Execute from Emergency dial screen): **05***#18. To View Software, PDA, CSC, MODEM Versions: *#1234#19. To enter ServiceMode: *#0011#20. To show Battery status: *#0228#21. To show Touchscreen firmware version: *#2663#