Correspondingly, how do you open an APK file?
Just open your browser, find the APK file you want to download, and tap it – you should then be able to see it downloading on the top bar of your device. Once it's downloaded, open Downloads, tap on the APK file, and tap Yes when prompted. The app will begin installing on your device.
Are APK files safe?
Apk is the name for the android app executable file. They are too may apk sharing sites and you never know if the apk for the app is safe. The best way is to download the app from Google play store or Amazon store. Also you need to enable settings to install apk from sources other than Play store.
Can I delete the APK file?
So no, it does not need to be on there. I think you can delete the apk file after installing it to the phone. Ask a simple question.. after installing an application do you need to keep the installer? Generally, the pkg.apk files are the installed apps and can't be deleted even if you try.