You want to upload three pictures of a chair you are selling. The next screen asks about photo access. Before tapping the largest button, count what the task actually needs: three images. That is a useful starting point for choosing permission.
Start with a small selection
On iPhone, photo access can be limited to chosen images; review it in Settings under Privacy & Security, then Photos. Android’s system photo picker also lets you select individual files, with availability and screens depending on the app and Android version.
The practical check is simple: attach one harmless picture first. Confirm that the app received the intended image, then add the other two. Open thumbnails large enough to distinguish near-identical shots. A picture of the chair with a shipping label behind it is a different choice from the clean version beside it.
A missing picture is not a reason to allow everything
Reopen the selection screen when another image is needed. If it is missing, check the album and account before changing permissions. Supported Google Photos integration can bring backed-up pictures into Android’s picker; when several Google accounts are signed in, check which one supplies them.
For a one-off listing, granting full access merely to save a few taps is an awkward trade. For an app whose purpose is organising an entire library, wider access may fit the task. Read what it requests and decide deliberately.
Access and uploaded copies are separate
After posting, review the finished listing as a reader would. Check the actual photographs, their order and anything visible in the background. Reducing a permission later should not be treated as a way to recall an uploaded copy: manage that copy in the service itself. Keep permission review and publication review as two separate steps.