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Settings → Photos → Optimize iPhone Storage. iCloud keeps full-resolution photos in the cloud; iPhone keeps thumbnails. You see every photo, but only the ones you're actively viewing are full-res. Most users gain 10-50GB.
Requires iCloud+ if you have lots of photos — 200GB tier is $3/mo and pays for itself.
Settings → General → iPhone Storage → "Enable" Offload Unused Apps. Removes apps you haven't opened recently but KEEPS the documents and data. Re-download the app and your data is right there. Frees 1-10GB depending on what you have.
Photos → Albums → Recently Deleted → Select All → Delete. iOS holds deleted photos for 30 days before permanent deletion. If you've been deleting big files, those are still taking up space.
Settings → General → iPhone Storage → Messages → review large attachments. Old photo/video texts pile up. You can delete just the attachments without losing the message thread.
Settings → Messages → Keep Messages → "1 Year" (or "30 Days" for aggressive cleanup). Most people have years of message data. The vast majority is junk attachments.
Settings → Safari → Clear History and Website Data. Safari accumulates GB of cached pages over time. Won't affect your saved bookmarks or passwords.
Apple Podcasts → Library → Downloaded Episodes → delete completed ones. Podcasts auto-download by default; old episodes hog space. Settings → Podcasts → "Episodes" → set to delete after played.
Streaming apps cache movies "for offline." Open Netflix/Disney+/HBO Max → Downloads → delete what you've finished. Easy 5-10GB recovery.
Settings → General → iPhone Storage. The "System Data" category often shows a large blob — caches that iOS won't let you delete directly. Sometimes a restart helps. For chronic large System Data: a backup-then-restore via Finder/iTunes shrinks this category.
Settings → Camera → Record Video → Format → "1080p HD at 30 fps" instead of "4K HDR at 60 fps." HDR 4K video files are 3-4x bigger than 1080p. Most casual users don't see the difference in playback.
Settings → Camera → Formats → "High Efficiency." HEIC is 50% smaller than JPEG for the same quality. Only downside: compatibility with older Windows / web upload sites. For most users in 2026, it's fine.
For photographers shooting tons of ProRAW/ProRes — connect a USB-C SSD directly to iPhone and move large media files off-device. Keeps them accessible without filling internal storage.
Connect via USB-C to iPhone (iPhone 15 and later have full USB-C). Move ProRes/4K videos here. Plays back directly from the SSD.
Shop SanDisk USB-C SSDs →Smaller flash-drive form factor. Plugs directly into iPhone, lets you move photos/videos off device via the iXpand app.
Shop iXpand Drives →Settings → General → iPhone Storage shows a bar chart of usage by category. Most users see:
If your iPhone is genuinely full after all 12 fixes, and you're using max iCloud+ tier, time to consider:
If you've tried everything and the iPhone is still full (especially "System Data" that won't shrink), mail-in service available. We do clean backup + restore that often recovers 5-15GB of stuck System Data.