The question of whether deleted iPhone photos can be recovered has one honest answer: it depends entirely on what state the photo is in. Conflating three different states is where dishonest tools and overhopeful claims go wrong. Sherlock Forensics iPhone Analyzer handles each for exactly what it is.
Hidden photos are not deleted at all. They are moved to a hidden album, still fully present on the device, so Sherlock surfaces them plainly. Recently Deleted photos sit in a holding album for roughly 30 days before iOS clears them; while they remain they are recovered in full with their metadata. Purged photos, past that window and cleared from the library, are the hard case: what survives then is only what freed-page carving can pull from the database before those pages are reused. Naming the state is the first honest step; the recovery claim follows from it.
