If you want to install an android app which is not available in the play store, this article is just for you. Follow the following steps:
Go to Menu>Settings> Applications. Select the box “Unknown Sources”.
Conventional method of installing the app
• Install file manager.
• Copy .apk file to SD card
• Install .apk
Dropbox installation
• Download apk file to dropbox and let it synch
• Open Dropbox in your phone, download the apk file
• Follow earlier installation process
Online Apk Installer
• Go to Apkinstall.com
• Select “Browse Files” button
• Choose the apk file from your PC
• QR Code will come
• Scan QR code
• Click on the link and download
• Install .apk