5. Close an App or Program With the Alt + F4 Keyboard Shortcut. You can also use the Alt + F4 keyboard shortcut to close an app or program on Windows. To do so, switch to the app or program that you want to close and press Alt + F4 together on your keyboard to close it.
Force close an Android app
Step 1: Open the Settings apps. Step 2: Select the Apps or Apps & Notifications option. Step 3: You may need to select See all apps to view all opened applications. Step 4: Tap the application you wish to force close.
Force stop apps from the Settings menu on an Android phone
Tap an app. In the App info menu, tap Force stop. Tap OK to confirm the action.
Press Ctrl + Alt + Delete and select Task Manager or Ctrl + Shift + Esc to bring Task Manager up directly. Select the application you're trying to close and click End task.
Press Ctrl+Alt+Del on your keyboard and click Task Manager. Now, find the app that's stuck in full screen mode under Processes. Highlight the app and press End task at the bottom right.
Swipe right or left through your apps and swipe up on the app you want to close. When it disappears at the top of the screen, the app is closed. Alternatively, you can tap on an app to open it to full screen. Tap anywhere outside the apps to return to the Home screen.
Force-Close With the Task Manager
The Task Manager is the most reliable method of closing stuck apps. To open it, press Ctrl + Shift +Esc. In the simple view, click an app and choose End task to close it.
1. Press the "Ctrl | Alt | Del" keys simultaneously on your keyboard, and select "Task Manager" from the menu.
Use Alt + Tab keyboard shortcut to bring your unresponsive program to the front, and then press Alt + F4 keys at the same time to force the program to quit.
According to Apple, force quitting an app will not improve your battery life, and it's possible that doing so can actually drain battery because it causes the iPhone to load it all over again.
Reinstall the App
If the issue prevails, another trick on how to fix force close apps on Android is to reinstall the affected app. Usually, there might be a compatibility issue with the current version you're using, or your current software version or architecture conflicts with the app itself.
A freeze is when a software program stops functioning and cannot perform any functions. Usually there are no error messages that display, but the program remains visible. To diagnose this problem, it is recommended that you find the dump file created by Windows.
The most common way to close an unresponsive app on Windows is to use the keyboard shortcut of Alt + F4. This combination of keys tells the operating system to terminate the currently active window.
While no feature allows you to close all your opened apps at the same time, you can close several apps simultaneously on your iPhone or iPad. All you need to do is access the App Switcher as you normally would (which we'll explain below). Then, use multiple fingers to swipe multiple apps off the screen at once.