How To Use Secret Codes On Motorola Moto G Stylus Direct

If a code doesn’t work, it may be disabled by your carrier or Android version.

These codes aren’t "secret" in the sense of hacking or unlocking illegal features. Instead, they are shortcuts built into the Android operating system by manufacturers (in this case, Motorola) and carriers. They allow you to run hardware tests, check IMEI numbers, access network settings, and even recover hidden menus.

If a code does nothing, your carrier (T-Mobile, Verizon, AT&T) may have disabled it. Try turning off Wi-Fi Calling temporarily.