If you don’t want to keep System UI Tuner hidden feature on your Android 6.0 Marshmallow then you can easily disable this feature from your phone.
How to Disable System UI Tuner in Android 6 Marshmallow When you tap on this feature you will get a notification message box just tap on the “ GOT IT” option. Now scroll down the “ Settings” page you will get “ System UI Tuner” feature which is located in “System” category. Step 3: You can again swipe the home screen from the top and check the gear icon will be changed. Must Read: Important tips how to speed up Android phone performance “Congrats! System UI Tuner has been added to Settings.” Now, you will directly get entry in the “ Settings” window and get the given message on your phone screen. During rotating the gear icon remove the finger from your phone. Step 2: Tap and hold on the Gear icon which is located on the top right corner until the gear icon start rotating. Step 1: Swipe down top of your phone home screen with the help of one or two fingers. How to Enable System UI Tuner in Android 6 Marshmallow