Why use this method?
- They want to install a large application, and do not have much space on the phone . Normal installation will use the space to store your file download while installing store. If we use the SD card for installation, the space will not be busy on the phone, so leave more free space to install the desired application.
- Installing an application on a phone without using data . Thus, there may be a situation where you want to install an application but do not want to spend moving (or not have them) data, and we have no Wi-Fi. May be rare, but can occur.
- Install the same application on different terminals . Why I go to download an application several times if I'm going to install on several phones Windows Phone 8? You can copy your credit card (if available) and avoid those multiple downloads.