If you noticed the SystemUI Tuner missing from the new preview 3 of Android 6.0 Marshmallow, this is how you turn it back on.

What this does is enable the system UI tuner functionality rather quite simply and quickly. You can also utilize this method to disable the system UI tuner feature in the same manner.

Google has kept the System UI Tuner hidden in Android Marshmallow and Android N, at least for now, simply because these settings are experimental and could have some bugs.

Remember the System UI Tuner that showed up in the original Android M Preview? You know, the hidden developer option that would allow you to tweak the settings toggles in the notification shade ...

Read update Now that the final Android 6.0 Marshmallow release is out, we can confirm that this new method of accessing the System UI Tuner still works exactly the same as in dev preview 3.

The System UI Tuner is hidden under Settings menu on Android 6.0 Marshmallow. Here's how to use it to make your device smarter.

Android O, however, will include these helpful shortcuts by default through the System UI Tuner, which was introduced in Marshmallow. You'll then be able to choose different functions to use as ...

Android's System UI Tuner lets you mess with Google's mobile OS even more than usual. Here's how to find it, and a quick rundown of what it can do.

To enable the System UI Tuner, swipe down twice on the Android notification shade to expand it completely. Then, press and hold the Settings cog and release it once it starts spinning.

Android Marshmallow offers a new set of customization options through a menu called System UI Tuner. Here's how to use it to customize your quick settings, status bar and more.

The Android O Developer Preview has introduced new ways to customize the navigation bar of your device, and now supports up to five buttons.