These are often used for flashing firmware or debugging via PC connection.
Here is a complete content list of Vivo emergency and secret codes: vivo emergency code
Some of these codes access sensitive system settings (like Rooting or Engineering Mode). Using them incorrectly can damage your phone’s software or cause hardware malfunctions. Proceed at your own risk. These are often used for flashing firmware or
Use these if a specific hardware feature is not working to diagnose the issue. Proceed at your own risk
Go to Settings > System Management > About Phone > Software Version . Tap the "Build Number" 7 times rapidly. This unlocks many hidden settings that users previously needed codes to find.
These codes are used by technicians to troubleshoot issues or by advanced users to access hardware testing menus.
Beyond physical emergencies, Vivo provides a suite of "dialer codes" that unlock the phone's internal diagnostic "Emergency Mode" or "Engineer Mode". These are accessed by entering specific strings into the phone's dialer app: