The primary codes to check for potential phone monitoring, specifically related to call forwarding, are *#21# and *#62#.
Checking for Phone Monitoring with USSD Codes
USSD (Unstructured Supplementary Service Data) codes are special sequences of numbers and symbols (like asterisks and pound signs) that you dial on your phone to access various network services or check specific settings. They communicate directly with your mobile operator's computers.
Key Monitoring Check Codes
You can dial the following codes directly from your phone's dialer:
- *#21#
This code allows you to check the status of all call forwarding types. It reveals if your calls, data, SMS, faxes, or other communications are being forwarded when your phone is unreachable, busy, or unanswered. The results will typically show if any services are currently being forwarded and to which number. - *#62#
This code checks the status of call forwarding specifically when your phone is out of reach or has no service. It will display the number to which calls are being forwarded in such scenarios. Often, this is your voicemail number, which is a normal setting.
Interpreting the Code Results
When you dial these codes, listen carefully for any information returned that indicates whether your phone calls or data are being forwarded. If the code execution does not return any information at all, this is generally an indication that your device is not being tracked via these specific call forwarding methods. If numbers other than your voicemail appear, it might warrant further investigation.
Important Considerations
While these codes offer a quick way to check call forwarding settings, which can be part of a monitoring setup, they are not exhaustive. They primarily reveal call forwarding paths and not all forms of phone monitoring (e.g., spyware or advanced surveillance). They serve as a basic, initial check to identify potential redirection of your communications.
