I saw some phone codes on other websites, but the phone's built-in dialer doesn't work, and several downloaded ones also don't work. For those who understand, please share a dialer. The codes are as follows: not all of them can be used, it depends on how much the Android system has been modified! Different manufacturers' phones all have some special codes used to check system and firmware versions, or to test hardware. Of course, Android phones are no exception. Besides being able to display more detailed phone information like a computer, they can also be reset to factory settings, update camera firmware, etc. But some codes should be used with caution, as they might cause the phone to lose its original functions. The author is merely reposting from the internet and is not responsible for any problems that occur.
*#*#4636#*#* displays phone information, battery information, battery usage history, usage statistics, and Wi-Fi information.
*#*#7780#*#* resets to factory settings without deleting preset programs or SD card files.
*2767*3855# resets to factory settings and deletes all SD card files.
*#*#34971539#*#* displays camera firmware version or updates camera firmware.
*#*#7594#*#* when long-pressing the power button, a window to switch phone modes will appear, including: silent mode, airplane mode, and shutdown. You can use the above code to change it directly to a shutdown button.*#*#273283*255*663282*#*#* – Opens a place where you can back up media files, such as photos, sounds, and videos. *#*#197328640#*#* – Starts service mode, allowing you to test some phone settings and modify WLAN, GPS, and Bluetooth test codes. *#*#232339#*#* or *#*#526#*#* or *#*#528#*#* – WLAN test *#*#232338#*#* – Displays Wi-Fi MAC address *#*#1472365#*#* – GPS test *#*#1575#*#* – Other GPS tests *#*#232331#*#* – Bluetooth test *#*#232337#*# – Displays Bluetooth device address *#*#8255#*#* – Starts GTalk service monitor to display phone software version codes *#*#4986*2650468#*#* – PDA, phone, h/w, rfcalldate *#*#1234#*#* – PDA and phone *#*#1111#*#* – FTA software version *#*#2222#*#* – FTA hardware version *#*#44336#*#* – Hardware tests for PDA, phone, CSC, build time, changelist number *#*#0283#*#* – Packet loopback *#*#0*#*#* – LCD test *#*#0673#*#* or *#*#0289#*#* – Melody test *#*#0842#*#* – Device test, such as vibration and brightness *#*#2663#*#* – Touchscreen version *#*#2664#*#* – Touchscreen test *#*#0588#*#* – Proximity sensor test *#*#3264#*#* – Memory version
