Keynote
Delete a Keynote presentation on iPhone
Important: If you turned on iCloud Drive for Keynote (in Settings on your iPhone or iPad), deleting a presentation from iCloud Drive removes it from iCloud and from all other devices and Mac computers that use the same Apple Account.
Note: When you delete a presentation that was shared with you, it’s deleted immediately from your device and can’t be recovered from Recently Deleted. If you later need to see the presentation again, tap the link you received in the original invitation or ask the owner to send another.
See alsoDelete a custom theme