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6 hidden Samsung dial codes that unlock secret features on your Galaxy phone
Android Authority • • technology
Key Points:
- Samsung Galaxy phones support MMI (Man-Machine Interface) codes entered via the dialpad, allowing users to access hidden menus and features such as viewing the IMEI, hiding caller ID, clearing system logs, and running hardware diagnostics.
- Most MMI codes require disabling One UI’s Auto Blocker security feature found in Settings > Security and privacy, which automatically re-enables after 30 minutes; carrier-locked phones may still restrict some codes.
- Key useful codes include *#06# for displaying IMEI numbers, *67 or *31# to hide caller ID, *#0808# to change USB connection modes, *#2663# to update touchscreen firmware and refresh Wi-Fi, and *#9900# to delete old system logs and free storage.
- The code *#0*# opens a comprehensive hardware diagnostic menu to test speakers, touch responsiveness, vibration, sensors, and other components, helping users troubleshoot device issues without external tools.
- While many other dial codes exist, these highlighted codes provide practical benefits for Galaxy users seeking to better manage and troubleshoot their devices.
