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。
clike
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 +call
Displays 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#