ViVO mobile phone manual

*#06# Query the serial number of mobile phone

* # * # 4636 # * * Android engineering mode (before the operating system stabilizes 4.0)

* # * # 4838 # * * Android engineering mode (after the operating system is stable 4.0)

* # * # 7777 # * * Developer mode (used to turn on off-screen effects, turn on the visual white point of the touch screen, etc. )

* * * Engineering mode

* # * # 001# * * vivonv parameter

*#225#vivo version test

*#*# 1 12#*#*BBKlog

*#*# 1 18#*#* Hide the 3G switch

* # * # 5806 # * * Display 3G switch

*#4766#MTK engineering mode (MTK chip available)

* # * # 10922768 # * # Sound test

* # * # 2768 # * * Sound test

* # * # 8255 # * * GTALK service monitoring