—, so this video shows how to enable developer options. Go to settings then go down tap on abort form, then tap on software information. So here you can see build number on build number. We have to tap seven times one two, three, four five, six seven here you can see the message developer mode has been enabled. Then go back. Go back now under this about phone.
You can see developer options tap on that. If you want to enable USB debugging, you can enable that here then tap on okay. So there is a lot of options you can check it. So let me disable USB debugging. So if you want to disable developer options, you can disable it here now.
I have disabled developer options. Let me go back now under about phone. There is no developer options because I have disabled it. So this way we can enable or disable developer options.
Source : CeLL