These codes are built-in and free to use for diagnostics and hidden information: *#*#6484#*#* or *#*#64663#*#*
: A quick way to view the base hardware specifications and software version of the device. Network & Feature Management Codes how to use secret codes on poco x6 pro free
Accesses the Firebase Cloud Messaging diagnostic menu to check server connections. *#*#225#*#* Calendar Info These codes are built-in and free to use