Mình cũng không dành dòng này bạn có thể tham khảo nhé :
Here is a list of various codes to try out. Some may require an MSL to be able to make full use of the functionality.
##2769737 [##BROWSER] - MiniBrowser Settings (2G)
##8626337 [##VOCODER] - Set Vocoder
##3282 [##DATA] - Setup Menu for Vision handsets
##8463 [##TIME] - Airtime Menu
##040793 - Debug Menu
##786 [##RUN] - Technical Information (be careful with this one, you can reset the handset)
##932 [##WEB] - IP Address information (2G)
##889 [##TTY] - TTY On or TTY Off
##4357 [##HELP] - Help