Once activated, the menu is not listed on the main settings page. To find it: Go back to the main Settings menu. Tap on Additional settings . Scroll down to find and tap on Developer options . Key Features and Usage
: Find the Build number (sometimes listed as "B number"). Tap it quickly and repeatedly—exactly seven times . how to open developer options on oppo a38
To disable them later, toggle off the switch at the top of the Developer Options screen. Once activated, the menu is not listed on