With each new Android update, hidden features lurk below the surface. Google hides these options to prevent unnecessary tinkering by average users. These secrets range from silly to very useful, with the latter offering new ways to manage your phone.
All these hidden features are still available on the first release of Android 9.0 Pie. Whether Google decides to remove them in later updates is still in the air, but we expect these features to be preserved. All options are pretty easy to find, with a tutorial for everyone to help you unlock these features and impress your friends and family.
Do not miss: 44 Cool new features and changes in Android 9.0 Pie  1. Feature Flags
New in Android 9.0 Pie is a secret menu option called "Feature Flags". Similar to Chrome's secret options (which have similar names), feature flags allow you to customize certain design options for those who do not like the changes to their Android Oreo versions. In our tutorial you will learn how to unlock this feature.
The System UI tuner has been a secret menu for Marshmallow since Android 6.0. Although more and more features are moving to other areas, it's still one of the only ways you can change the status bar without rooting your device. Unlike the previous version of Android, however, the System UI tuner in Android Pie requires a different method of unlocking. To learn how to unlock it, read our step-by-step guide.
It is known that Android contains an Easter egg with every OS update. Typically, the About Phone page displays some details of the version number that indicate an animation or game that is relevant to the dessert after which the OS version is named.
While Android Pie's easter egg boring "P" symbol, a popular old Easter egg is still there: The Flappy Bird clone known as Flappy Droid is now hidden elsewhere. The game was first introduced in 5.0 Lollipop and included a different environment than the popular game of giant lollipops as obstacles that you want to avoid. With Android 6.0 Marshmallow, the game has been updated to represent the new dessert with giant marshmallows instead of lollipops.
The marshmallow version of this game has been hidden in several recent versions of Android, with Pie being no exception. Check out our guide to unlock this game.
A nice hidden feature in Android 9.0 Pie is a new way to quickly get to the Clock app. When you tap the top left of the Quick Settings menu (in whole or in part), you can start the Clock app. Even better, if you have multiple watch apps installed on your phone, you can choose which one to launch.
Similar to the last hidden feature, Pie has also introduced a new way to quickly access the battery menu from any screen. When the quick setting is displayed (in whole or in part), you can quickly switch to the battery menu by selecting the battery icon in the upper right corner. Nothing stunning, but still pretty neat.
What do you think about the hidden features of Android 9.0 Pie? Did you find something that we missed? Let us know in the comments section below.