Android Users Should Know These Secret Smartphone Codes
Android Users Should Know These Secret Smartphone Codes
Publish Date: 2026-06-10 04:00:00
Source Domain: www.techadvisor.com
Summary created by Smart Answers AI
In summary:
- Tech Advisor reveals secret Android codes that unlock hidden diagnostic menus and device functions, including battery information, hardware testing, and IMEI identification.
- These USSD codes pose security risks as malicious websites can automatically execute them to change settings or factory reset devices.
- Essential codes include *#06# for IMEI numbers and *#0*# for Samsung service menus, though users should exercise caution.
Usually, you control your smartphone or tablet via the OS or app menus. However, certain functions can only be accessed using control commands: these are combinations of numbers that you enter via your phone’s dialler app, just like a phone number.
Many of these functions are not actually intended for the user, but for the mobile network provider or service technician. That’s why very few are publicly documented.
You should definitely exercise caution when trying them out. In the vast majority of cases, the smartphone will simply display an error message if it doesn’t recognise the code. It’ll say something like, ‘Connection problem or invalid MMI code’. However, it may also crash, in which case the only solution is to restart it. Some particularly nasty commands can even wipe the smartphone.
Tip: Skip to the end of the article to see all the numbers and what they do.
Special commands for individual smartphones
Control codes that are executed directly on the device have been around for a long time. All you need to do is enter the digits into the smartphone’s phone number field for something to happen. The problem: most of these secret codes only work on certain models, and often only if they’re running a specific version of Android.
For example, the combination *#0*# opens an advanced service menu on a Samsung Galaxy model. This allows you to test the screen’s display to detect faulty pixels, for instance. Or you can check whether the phone’s…
