- You can delete photos from your iPhone but keep them in iCloud by turning off iCloud photo sharing.
- You can also use a different iCloud account to keep the previous account's iCloud photos safe.
- Another solution is to use a different cloud server, like Dropbox or OneDrive, to back up the photos.
Apple's iCloud service allows you to share photos across devices, while also giving you an automatic backup should something happen to your iPhone.
For these reasons, the iCloud's memory is more permanent than the memory on your iPhone, iPad, or Mac and can serve as a failsafe if something happens to one of your Apple devices.
But there are limitations. The connectivity between iPhone and iCloud means that if you delete a picture on your iPhone, it's also removed from iCloud.