手机安卓系统内嵌了很多测试代码，分享一下。鸿蒙脱胎于安卓，绝大多数通用。

Testing Menu
##4636##Display Info about device
##4636##Factory Restore
##7780##Camera Information
##34971539##Completely Wipe device, install stock firmware
2767*3855#Backup all media files
*##273283*255*663282*##Wireless LAN Test
##232339## OR ##526##Change Power button behavior
##7594##Quick GPS Test
##1472365##Test mode for service activity
##197328640##Wi-Fi Mac Address
##232338##Another GPS test
##1575##Packet Loopback Test
##0283##Audio Test
##0673## OR ##0289##Vibration and Backlight test
##0842##Check touch screen version
##2663##LCD test
##0*##Touch Screen test
##2664##Proximity sensor test
##0588##RAM version
##3264##Bluetooth test
##232331##Field Test
##7262626##Check Bluetooth device address
##232337##PDA, Hardware, Phone and RF Call Date info
##4986*2650468##PDA and Phone firmware check
##1234##FTA hardware version
##2222##FTA software version
*##1111##Displays IMEI number
#06#Enables voice dialing logging mode
*##8351##Disables voice dialing logging mode
##8350##Brings up Epst menu
##778 +callDisplays Build time and change list number
##44336##Remove Google account setting
##7780##Reinstall the firmware
2767*3855#Used to enter into Service mode
*##197328640##Battery Status
#0228#Data create menu
*#273283*255*3282#Data usage status
#3282*727336#OTA update menu
#8736364#RF band selection
*#2263#Diagnostic configuration
*#9090#USB 12C mode control
*#7284#USB logging control
*#872564#Debug dump menu
*#746#System dump mode
*#9900#Shows Build time change list number
*##44336##NAND flash serial number
#03#Real time clock test
*#0782#Light sensor test
*#0589#Quick test menu
*#7353#Execute from Emergency dial screen to unlock
PUK code
05#