On vivo, the most commonly referenced codes include:
Here’s a deep review of — what they are, how to use them, what they reveal, and important limitations to keep in mind. 1. What Are “vivo Phone Check Codes”? These are USSD codes (dialer inputs like *#*#4636#*#* ) or secret engineering codes that let you access hidden device info, run diagnostics, or check hardware status on vivo smartphones (and many other Android phones). vivo phone check code