I recently followed the guide "How to Use Secret Codes on REDMI A3" , and here’s my honest take.
4.5/5 Would I recommend? Yes, for troubleshooting and checking hardware stats. No, if you’re looking for actual hidden features. How to Use Secret Codes on REDMI A3
On the Redmi A3 (running HyperOS based on Android 14), some older codes (like engineering mode ( # #3646633# # )) no longer work due to Android security restrictions. The guide could better clarify which codes are blocked by Xiaomi vs. which still function. I recently followed the guide "How to Use