I'm working in app to pick photo, I have used UIDocumentMenuViewController to display list of extensions for document provider. This list shows Dropbox, iCloud, GoogleDrive but not the native Photos app, why?
Sample of my code:
UIDocumentMenuViewController *menuVC = [[UIDocumentMenuViewController alloc] initWithDocumentTypes:@[@"public.image"] inMode:UIDocumentPickerModeImport];

I'm not sure if there is another way natively to do this, but I came up with a solution to add a custom option with handler. I added "Photos" option and in the handler I use
UIImagePickerViewController:I will do the same and add another option for "Camera".