These codes are typically used by service technicians for deep-level troubleshooting: Version Test ( *#*#225#*#*
This is arguably the most powerful code available to a VIVO user. It unlocks . Since the VIVO Y19s runs on a MediaTek chipset, this code opens a massive menu used by developers and repair technicians. How to Use Secret Codes on VIVO Y19s
: Opens the Engineering Mode where you can run manual and automatic tests on all hardware components, including the screen, sensors, and cameras. These codes are typically used by service technicians
The process is straightforward, but there is a common pitfall: : Opens the Engineering Mode where you can
: Most VIVO codes will trigger a hidden menu automatically as soon as the last character is typed. If nothing happens, you may need to tap the Call button. Essential Secret Codes for VIVO Y19s
Disclaimer: Secret codes vary between firmware versions and carriers. The codes listed above were verified on a global variant of the VIVO Y19s running Funtouch OS 14. If a code does not work on your specific unit, it has likely been disabled by your network provider or regional software lock.
When you dial these codes into your standard dialer app, your phone recognizes the pattern and triggers a specific hidden menu or action. Think of them as "backdoor passwords" that allow technicians and advanced users to bypass standard menus to access core functions instantly.