The way to access developer options in Android has changed since version 4.2. To access the developer options in Android 4.2 and above, go to Settings -> About Phone, then tap on Build number 7 times. You will then be greeted with a delightful message saying “You are now a developer” and will have access to all available developer options.
Who knew it was so easy to become an Android developer? 😉
Developer options will now be available under the System menu in Android Settings.