1. *#06# - Display IMEI Number
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2. *#*#4636#*#* - Display device information
3. *#*#7780#*#* - Perform a Factory Reset
4. *2767*3855# - Wipe phone & re-install firmware
5. *#0228# - Check battery status
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6. *#0*# - Hardware test mode
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7. *43# - Enable call waiting
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8. *#67# - Check call forwarding status
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9. *#21# - Check call forwarding status
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10. *#62# - Check call forwarding status when not reachable
11. ##002# - Erase all call forwarding
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12. *31# - Hide Caller ID
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You can also dial #31#[phone number] to hide your caller ID for a certain person.
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13. *#004# - Check call diversion status
1. *#004*[type mobile number without brackets]# - Divert calls to a specific phone number
2. #004# - Deactivate call diversion
3. ##004# - Remove all call diversions
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14. *#9090# - Open diagnostic configuration screen
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15. *#0011# - Service Mode
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16. *#2222# - Check Hardware version
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17. *#1234# - Check software version (Samsung)
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18. *#12580*369# - Check Software and hardware version
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*#12580*369# is again a Samsung-specific secret code that can be used to find out the software version
(
BL, AP, CP, and CSC
). Besides, you can also find out the Hardware revision version and the RF Cal
(Radio Frequency Calibration) date that can also be the
manufacturing date of your Samsung phone
.
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19. *#0283# - Check Audio loopback control
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If you think that one of the speakers of your phone has some technical issue, you can use *#0283# to
check if all speakers or mics individually.
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20. *#34971539# - Check Camera firmware
I don't think anybody ever checks the firmware version of the front or rear camera of a smartphone or
tablet. However, since *#34971539# is one of few working secret codes for Android, we are mentioning
it here.
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21. *#9900# - Launch System Dump mode
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22. **04* - Change Android device PIN
By using this Android secret code, you can change the lock screen PIN of your Android device without
going to the settings. All you need to do is to type this code in the following format.
**04*[old Pin]*[new Pin]*[new Pin]#
Source page:
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Document Outline - 1. *#06# - Display IMEI Number
- 2. *#*#4636#*#* - Display device information
- 3. *#*#7780#*#* - Perform a Factory Reset
- 4. *2767*3855# - Wipe phone & re-install firmware
- 5. *#0228# - Check battery status
- 6. *#0*# - Hardware test mode
- 7. *43# - Enable call waiting
- 8. *#67# - Check call forwarding status
- 9. *#21# - Check call forwarding status
- 10. *#62# - Check call forwarding status when not reachable
- 11. ##002# - Erase all call forwarding
- 12. *31# - Hide Caller ID
- 13. *#004# - Check call diversion status
- 14. *#9090# - Open diagnostic configuration screen
- 15. *#0011# - Service Mode
- 16. *#2222# - Check Hardware version
- 17. *#1234# - Check software version (Samsung)
- 18. *#12580*369# - Check Software and hardware version
- 19. *#0283# - Check Audio loopback control
- 20. *#34971539# - Check Camera firmware
- 21. *#9900# - Launch System Dump mode
- 22. **04* - Change Android device PIN
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