How To Use Secret Codes On Xiaomi Mi A2 ((full))

This is arguably the most important code for any Xiaomi owner. It opens the Quality Check (QC) test menu , which allows you to manually test every hardware component of your phone, including the screen, speakers, vibration, cameras, and all sensors. This is incredibly useful if you suspect a hardware fault or are buying a used device. 2. Advanced Phone Information & Testing

This is where "Secret Codes" come into play. These USSD (Unstructured Supplementary Service Data) codes act as backdoors to your phone’s software, allowing you to diagnose hardware issues, check sensor calibration, and access hidden menus that are invisible in the standard settings app. How to Use Secret Codes on XIAOMI Mi A2

Let’s clarify: The Mi A2 uses a chipset. Therefore, the MediaTek engineering code ( *#*#3646633#*#* ) does not work . Instead, use: This is arguably the most important code for

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