For Huawei phones, these are the codes that will work for them.
The most popular code for Huawei phones is the “*#*#2846579#*#*” that opens up the project menu.
*#*#2846579#*#* Project Menu
*#*#2664#*#* Touch screen test
*#*#4636#*#* Phone Information, Usage, and Battery
*#06# IMEI Number
*#0*# Enter Service Menu
*#*#34971539#*#* Detailed Camera Information
*#*#273282*255*663282*#*#* Backup All Media Files
*#*#232339#*#* Wireless LAN Test
*#*#197328640#*#* Enable Test Mode for Service
*#*#0842#*#* Back-light Test
*#*#2664#*#* Test the Touchscreen
*#*#0842#*#* Vibration Test
*#*#1111#*#* FTA Software Version
*#12580*369# Complete Software and Hardware Info
*#9090# Diagnostic Configuration
*#872564# USB Logging Control
*#9900# System Dump Mode
*#301279# HSDPA/HSUPA Control Menu
*#7465625# View Phone Lock Status
*#*#232338#*#* Shows WiFi MAC address
*#*#1472365#*#* or *#*#1575#*#* GPS test
*#*#232331#*#* Bluetooth test
