Christine-

Maybe your phone creates the photos in jpg format... I'm only guessing. If your phone downloads directly to your computer, you would need to open a program, such as Paint, to save it in png format. No worries if you always hold your phone the right direction. The photos flip when you turn the phone another direction than the way it's supposed to be held.

Sometimes you have to turn it though, when you need a wide screen shot or a tall screen shot. I like to take photos the way I like to take photos... and then save as png if it happens to be a photo that needed to be taken sideways.