1. *#*#4636#*#* - Tablet Information, Usage and Battery
2. *#06# - IMEI Number
3. *#0*# - Enter Service Menu
4. *#*#34971539#*#* - Detailed Camera Information
5. *#*#273282*255*663282*#*#* - Backup All Media Files
6. *#*#232339#*#* - Wireless LAN Test
7. *#*#197328640#*#* - Enable Test Mode for Service
8. *#*#0842#*#* - Back-light Test
9. *#*#2664#*#* - Test the Touchscreen
10. *#*#0842#*#* - Vibration Test
11. *#*#1111#*#* - FTA Software Version
12. *#12580*369# - Complete Software and Hardware Info
13. *#9090# - Diagnostic Configuration
14. *#872564# - USB Logging Control
15. *#9900# - System Dump Mode
16. *#301279# - HSDPA/HSUPA Control Menu
17. *#7465625# - View TAblet Lock Status
18. *#*#232338#*#* - Shows WiFi MAC address
19. *#*#1472365#*#* or *#*#1575#*#* - GPS test
20. *#*#232331#*#* - Bluetooth test
21. *#*#2664#*#* - Touch screen test