IMSI stands for International Mobile Subscriber Identity; it is an identification code used to individually represent cell phones on the GSM and UMTS networks. IMSI is associated almost exclusively with Android-based cell phones, and is the functional equivalent to IMEI and MEID codes used across different cell networks to identify telephony-equipped electronic devices. Retrieving your IMSI is a fairly straightforward task regardless of the operating system your phone uses, and it should take no more than five minutes to learn and complete.
Using Android OS
Step 1
Open the app drawer, then open the "Settings" app.
Video of the Day
Step 2
Tap "About Phone" from the settings menu.
Step 3
Tap "Status," then scroll down to the IMSI heading. Your IMSI number will be listed below this heading.
Using Symbian or Palm OS
Step 1
Power up your phone.
Step 2
Ensure that your phone has service, and that it is not in airplane mode.
Step 3
Dial "*#06#" on the keypad, then press "Send." Your phone should display its IMSI number after a short delay.