7. Tap and slide for app information and settings
You can get all kinds of useful data about an app from its “App info” screen: How much storage it’s using, how much data it consumes, when and how its notifications pop up, whether it’s a default app for certain device functions (such as for managing photos or playing music), and so on.
The usual way to get to the info screen for a given app is to tap Settings > Apps; you’ll then need to scroll down the alphabetized list to find the right app.
Here’s the shortcut: Open the Application tray, tap and hold an app icon, slide it up to the “App info” button at the top of the screen, then release.