Do you have a spare computer to use? You can connect the iPhone to the computer, navigate to the iPhone's DCIM folder, and the photos will be there. Once they're moved to the computer, plug in your Galaxy and move them from the computer to the Galaxy.
If you backup the iPhone in itunes and then download SmartSwitch for your computer (my computer is a mac) you can choose to "restore" from an itunes backup. Then you can select call log, photos, music, etc...
If youre not opposed to the cloud, like others have suggested, upload your photos to Google photos. Then they'll be on the app on your note. It's always cumbersome trying to move pictures and videos. Always have to be careful about dups or missing pics. For those reason I go cloud for pics and vids. Makes it much easier when changing devices.