What are APK files and how it lets you install apps on Android phone
Last Updated: 2026-08-07 08:38:19
Android Package Kit of APK is a term that most of you have heard with Android in the picture. You see stories where Google is not very keen for people to install these APK files on their Android phones because of security reasons.
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APK files are Android Package Kits.- They install apps on Android devices.
- Google warns of security risks with APKs.
The open source nature of Android allows you to install apps from outside of the Play Store and that’s where these APK files come into the picture. So what exactly are these APK files, how do they carry the apps that you install on Android devices and how do they work? Here are the important details that you should know.
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What are APK files
APK or Android Package Kit files are standard format used within the Android ecosystem that allows you package installable apps and even games on devices. This is Android’s version of .exe file that you use on Windows systems to install software that you download from external sources.
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How do APK files carry the Android apps?
An APK file is similar to how ZIP files operate in Windows, allowing you to carry large size applications, files and even documents and compressing them into small packet files to extract and use. The APK file carries different sub files that can be only extracted on an Android device. It also has icons, name of the apps, and even any audio content attached to the file.
The whole package is the hub where the app resides and can be downloaded from the internet. For instance, Epic Games has offered games like Fortnite via its website for a long time, and this effectively an APK file that you download to your Android phone and install the package to extract the game and supporting materials.
How the APK files work on Android phones
Google follows the same principle as these APK files but the Play Store is the front-end where you don’t need to indulge in these packages to install the app. However, the real use case of APK files are evident when you download them from third-party app stores or websites.
The process is called sideloading, something Google is not a fan of these days, and highlights the possible effects of using these APK files to download apps. APK files can be ported straight into the Android device:
- Double tap on the file to extract the app and other images available
- Click on install
- Once the app has been downloaded you will see the main app icon flashing on the home screen of the Android phone
Is it safe to download APK files for Android phones?
APK files are generally reliable and safe to install but as Google has pointed out, the popularity of these files have made it a haven for bad actors who can make people download the APK files with malicious content that can be used to attack and take control of their devices.
Most of the WhatsApp scams that people face comes via these APK files that the victims forcefully end up installing on their devices and face the wrath of such attacks.