APK Installer For android Go to the Play Store on your Android phone or tablet, and search for APK Installer. Tap on the first result, and then tap on the Install button. In another case, you may be required to provide a confirmation code. You can see a list of your apps in the app drawer, and then tap on the APK Installer app. Tap on the Install button. Enter the code and tap on the Confirm button. If you are asked to uninstall an existing app, tap on the Uninstall button, and then tap on the OK button. If you are asked to delete an existing app, tap on the Delete button, and then tap on the OK button.