2. This option is when you try instelling directly from Google pl8 and you isn't working because of your version of google play services) search for Xender using a browser and download it from secureed bp directly from you Samsung gaalx alpha or apha s801 after that you can allow unknown source installation before than asement the app.
2. This option is when you tried installing directly from Google Play Store and it isn't working (because of your version of Google Play Services). Search for Xender using a browser and download it from a secured website directly from your Samsung Galaxy Alpha or Alpha S801. After that, you will have to allow unknown source installation before installing the app.