Namely, back in 2017, Apple introduced HEIC or High-Efficiency Image File Format, a new default image format for all its devices with iOS 11 and later. However, up until recent releases, Adobe hasn’t caught up to significant change on Apple’s iPhone and other iOS devices. As one of the best photo editing tools, Photoshop has native support for most-used image formats. Opening HEIC file in Photoshop is different for Mac OS and Windows users.