You can, although I’d check and double check to be sure. The way I transfer photos from my phone is to copy them straight to my computer so that I have a local copy on my computer. Sometimes I’ll copy all of them to various services for backup. https://www.flickr.com/ has been around a long time for example.
But my #1 backup copy before deleting stuff off of my phone is my own computer. *Then* I’ll _also_ have things on ‘the cloud’ somewhere. [google, facebook, etc]. I trust flickr a bit more over the others because of their longevity. You can also email them to yourself if you have gmail. I expect gmail to be a trustworthy holding pen as well.