Once unlocked, the menu is hidden within your system settings: Go back to the main Additional settings Scroll down and tap on Developer options How to Disable Developer Options If you want to hide the menu again, simply open Developer options and toggle the switch at the top to
Once enabled, you can find here:
If you ever need to hide this menu again, you can go into Developer Options and toggle the main switch at the top to "Off." how to open developer options on oppo a38