If you're always curious about new things, here are few code that you can use to unlock some hidden actions or enter secret menu in your android.

-->The bolded text after each code is the function.

*#06# Show phone's IMEI

*#0*# Info menu

*#301279# HSDPA/HSUPA settings

*#9090# Diagnostics settings

*#07# Displays the Specific Absorption Rate (SAR) value of the device

*#*#225#*#* Displays calendar storage info

*#*#2663#*#* Touchscreen version

*#*#232338#*#* MAC address

*#*#426#*#* Google Play Services info or Firebase Cloud Messaging diagnostics

*#*#759#*#* Access Rlz Debug UI

*#*#4636#*#* Info menu

*#872564# USB logging settings

*#*#34971539#*#* Camera info

*#*#1111#*#* FTA software version

*#*#1234#*#* PDA software version

*#12580*369# Software and hardware info

*#*#3264#*#* RAM version

*#*#232337#*# Bluetooth address

*#*#2222#*#* Hardware version

*#*#44336#*#* Software version and update info

*#*#273282*255*663282*#*#* Backup all media*#7465625# Device lock status

*#7465625# Device lock status

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