First, check what is filling your iPhone
Open Settings → General → iPhone Storage. Look at the storage used by Photos and the other apps. If another app is the main consumer, cleaning your camera roll may not solve the immediate problem.
Inspect a video in Photos
Open the video in Photos, then swipe up or tap the information button. The available metadata can include its file size. This is useful when you already have a particular recording in mind.
See the big files together in Unclog
- Choose photo access. Full access lets Unclog look across your library; selected access limits it to the items you share.
- Read the map. Bigger tiles represent bigger files. The ranked list gives you sizes alongside the media details.
- Filter to Videos. Concentrate on recordings when those are what you want to review.
- Open a candidate. Play it and read where it lives before choosing an action.
Finding and previewing are free. You do not need to buy the video feature to understand what takes space.
Make one decision at a time
- Keep it: the video matters and you want the original quality.
- Make it smaller: you want the memory, and a lower quality is acceptable. See the compression guide.
- Delete it: you no longer need it. Unclog asks for confirmation through iOS; it does not choose files to delete automatically.
Size is not a reason to delete something.The map helps you decide where to look. You decide what is worth keeping.
Read the iPhone and iCloud distinction
Unclog distinguishes an item on your iPhone from one that is only in iCloud. Deleting a cloud-only original may do very little for local storage. Downloading it to make a smaller version can temporarily need more room on the phone.
With iCloud Photos enabled, deletion also syncs to your other devices. For the steps after deletion, read why your storage can still look full.