Step 3 :
Once you get the file, make sure to copy or transfer this file to your Android smartphone. You have to use a compatible USB data cable for your Android smartphone or you can even share files via different apps with the use of Bluetooth.
Step 4 :
Once the file gets transferred, go to the Apps menu and launch File Manager app from your device.
Step 5 :
Select Search option and enter GBWhatsApp there. You would see the APK file of GBWhatsApp application which we have just copied to the device.
Step 6 :
Tap on the APK file once and you would be asked whether to install this file or not. Select the Install button when you see an option.