When I take a photo using my iphone 5 I also have google photos on my iphone/ipad/windows laptop, and understand the photos in google photos are held in the cloud rather than on the device are when I take a photo, it is synced to go to Google photos. So is there any need for them to be left "on the phone"?. If not, is it possible to remove them all at once?. Ideally I would like to remove one at a time initially just to see for myself that they won't disappear from G. photo's as well, and once satisfied would take them all off the phone.