Re: how to save image in window phone from internet
Long press the pic and click save picture.in facebook you need to click full view(what ever but has full in it) below the image and long press and then save picture.
Just FYI, the screen shot function on the Lumia 822 with Windows Phone 8.1 OS (operating system) is - hold the "power button" and "volume up button" at the same time. Try it, it may be the same on your phone.