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Originally Posted by stbi
what does it mean technically if an app is "freezed"? Is the APK moved to another location, or are the unix access rights altered, or is a reference to the app deleted from some kind of "registry" of the Android system, or what else? Can it be done manually by a file manager?
Source - How TO Geek
Manufacturers and carriers often load Android phones with their own apps. If you don’t use them, they just clutter your system and sometimes in the background, draining resources. Take control of your device and stop the bloatware.
We’ll be focusing on disabling – also known as “freezing” bloatware here. It’s a safer process than uninstalling the bloatware completely, and is also easier to accomplish with free apps.
Uninstalling vs. Freezing
Uninstalling an app is exactly what it sounds like – the app is entirely removed from your device. Unfortunately, it’s not possible to get many of these preinstalled apps from the Play Store if you ever need them again. Uninstalling some preinstalled apps may result in problems or instability, so you could run into problems.
It’s safer to “freeze” apps instead of uninstalling them. A frozen app is disabled completely – it won’t appear in your app drawer and it won’t automatically start in the background. A frozen app cannot run in any way until you “unfreeze” it. Freezing and unfreezing are instant processes, so it’s easy to undo your changes if you end up freezing a necessary app.
If you really must uninstall apps, you should freeze them first and wait a few days to ensure that your phone or tablet works properly without them.
You can’t uninstall or freeze preinstalled bloatware apps without root access and third-party app managers. Try and you’ll find the options grayed out in the standard Android interface.