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Open your Settings. Scroll down and tap About device. Tap Software info. Tap Build number 7 times. Scroll down and tap Developer options. Tap Running services. Find the RAM usage for each running app. Tap the back button until you return to the Settings menu. Scroll down and tap Applications. Tap Application manager. Tap the app you want to remove. Tap Uninstall.
It’s the {"smallUrl":"https:\/\/www.wikihow.com\/images\/6\/68\/Android7settings.png","bigUrl":"\/images\/thumb\/6\/68\/Android7settings.png\/30px-Android7settings.png","smallWidth":460,"smallHeight":460,"bigWidth":"30","bigHeight":"30","licensing":"<div class=\"mw-parser-output\"><p>I edited this screenshot of an Android icon.\n<\/p><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"http:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a><br>\n<\/p><\/div>"} icon the app drawer. You can check your settings to find which apps hog RAM as they run in the background. Once you know which apps are problematic, you can uninstall or disable them so they no longer run in the background. It’s near the bottom of the menu.  After the 7th tap, you’ll see a message informing you that you’re now a developer. If you aren’t returned to the Settings menu, tap the back button to return now. This menu is new. This may be called Process statistics on some software versions. Now you’ll see a list of running apps and their processes and services. You’ll only see apps that are currently running by default. To see cached apps, tap Show Cached Processes. Each app in the list has the current RAM usage to the right of its name (in MB). It may be possible to regain better performance on your Galaxy by removing apps that use too much RAM.  If an app you don't use much is using as much or more RAM as other apps, you might want to remove it. Tap an app to view further RAM information, such as how much is being used by by other processes. Now that you know which apps use too much RAM, you can uninstall them. Stock Samsung apps cannot be uninstalled, but you may be able to disable them.  A list of apps will appear. This opens the app’s info screen. You may have to tap it again to confirm that you really want to remove the app. The app is no longer on your Galaxy. If you don’t see Uninstall, tap Disable instead. This will stop the running process and prevent it from restarting.