Start with one app and one task
Pick the app whose access you want to review and write down the action you actually need: attach one picture to a message, edit a selected image or manage a collection. Begin with a single app so you can connect a setting change to a specific result. Leave passwords, account details and private photos out of this record.
Use four short fields: intended task, permission observed, change made and result still to check. “Not checked” is a useful answer. This is a proposed review method, not a report of an experiment performed on your iPhone. You can complete the review without deleting photos or installing another app.
Find the Photos permission in Settings
In Settings, open Privacy & Security, then Photos. Review the apps listed there and the permission shown for the one you selected. Apple explains that an app appears in a category after requesting that type of access. An absent entry is therefore not a complete history of images you may have sent through other routes.
For an app you no longer use with your library, consider removing its access. For an app you still need, compare the available choices with your stated task. Use the labels displayed on your device: wording and available options can vary with the iOS version and the app. Record the actual choice instead of assuming a remembered label applies.
Distinguish limited access from the photo picker
Apple provides limited Photos library access, which lets an app work with a selection of items. It also provides a system photo picker that can return items you choose without granting the app broad library permission. These are different mechanisms. Seeing a picker while broad access is disabled does not, by itself, demonstrate a permission bypass.
If the app offers a limited selection that meets your task, choose only the necessary items. If it uses the system picker, review the items before completing the selection. Do not increase access automatically just because a desired image is missing; first check which mechanism the current screen is using.
Check the task using disposable images
Prepare two harmless images you can recognize, such as a drawing marked A and another marked B. Where limited library selection is available, select A only, return to the app and attempt the task you wrote down. Record what the app offers and whether you can finish without broadening access. Do not upload a personal document just to test a setting.
If B still appears, keep the result unresolved while you distinguish an existing import, a thumbnail or a system picker from a new library read. A screen observation is not a forensic audit. Keep your originals and avoid an app reset or deletion as a troubleshooting shortcut.
Use App Privacy Report as an additional observation
For another view, open Settings > Privacy & Security > App Privacy Report and enable it if you want to collect observations. It starts collecting after activation. Its Data & Sensor Access section includes recent Photos access over the past seven days. Turning the report off clears its data.
Compare the reported activity with the task and time you recorded. An empty newly enabled report is not evidence that an app has never accessed anything. A listed network domain does not tell you which photograph, if any, was transmitted. Treat unexplained observations as questions to investigate, rather than conclusions about a leak.
Separate future permission from existing copies
Finish with two decisions: the permission you want for future use, and any previously shared copies that need a separate review. Apple describes these settings as control over future access. A changed permission is not confirmation that an attachment, an upload or an earlier import has been erased.
Check the relevant app or service’s retention information for those copies. Your final record can simply say “limited selection set; intended task checked; earlier upload not reviewed.” Keeping that last uncertainty visible prevents a successful settings change from being mistaken for a complete cleanup.