This code leads to a calibration menu for your battery, proximity sensor, and light sensor. If your screen doesn't turn off during calls, use this to recalibrate the (Proximity).

Instead of memorizing *#*#6484#*#* , you can also access the same menu via:

How to Run a Full Diagnostic Test on a Xiaomi/Mi/Redmi/Poco Phone?

Use them wisely, and enjoy the hidden layers of your Poco X6 Pro