The steps to turn off developer mode on OnePlus phones are usually simple. Follow these steps:
Open Settings
On your OnePlus phone, find and open the Settings app.
Go to System Settings
In the settings menu, scroll to find "About phone" or a similar option, tap to enter.
Go to Developer Options
From the "About Phone" page, go back to the upper menu of Settings and you should see "System" or a similar option to click on.
Find "Developer Options" or "Developer Options" in the "System" menu and open it.
Turn off developer mode
At the top of the Developer Options page, you'll see a toggle or slider to enable or disable developer mode.
Tap the switch or slider to set it off.
You're done
After you turn off developer mode, you can exit settings. This way developer options will no longer appear in the settings menu until you enable it again.
On some versions of Android or OnePlus phones, turning off developer mode may only hide these options and not completely disable them. In most cases, this does not affect the normal use of the phone.
A factory reset may be required if you want to remove the developer option completely and not just hide it, but this will delete all the data on your phone, so make sure you have a backup of all your important data before you do this.
Developer mode is intended for advanced users and developers, and if you're not familiar with the settings, it's recommended that you don't change them at will, so as not to affect your phone's performance or functionality.