Did you know that there are secret codes on Nokia, Sony Ericsson, Samsung, Siemens and other phones? With these codes, you can run many features. We offer you the most important and practical GSM codes together. GSM codes work independently of the mobile phone model.. Just remember that not every code will work.

To show IMEI (serial number):
With this number, you can identify your mobile phone in case of theft or loss. you can detect. You can see the IMEI number on the screen with this code: Code: *#06#

Sony Ericsson: Revealing the secret service-menu:
With this code, it is normally only visible to service technicians you can access a secret menu. You can reach the menu with > *