iPhone Storage Full? Here's What to Delete First

Step 1: Check What's Using Your Storage

Before deleting anything, understand where your space is going:

1. Go to Settings → General → iPhone Storage
2. Wait for the bar graph to load (takes a few seconds)
3. Look at the breakdown: Photos, Apps, System Data, Messages, etc.

For most people, Photos & Videos account for 50-80% of storage usage.

Step 2: Empty "Recently Deleted" (Instant 1-5 GB)

This is the fastest win — many people forget deleted items still take space for 30 days:

1. Open Photos → Albums → Recently Deleted
2. Tap Select → Delete All

This alone can free up 1-5 GB for most users.

Step 3: Remove Duplicate Photos (2-8 GB)

Duplicates and near-identical shots accumulate silently. You likely have hundreds without knowing:

• Built-in method: Photos → Albums → Duplicates (iOS 16+)
• AI-powered method: Use Cool Cleaner to find both exact duplicates AND similar photos (burst shots, slightly different angles) that Apple's tool misses

Typical savings: 2-8 GB depending on library size.

Step 4: Compress Large Videos (3-15 GB)

Videos are the single largest storage consumer. A few minutes of 4K footage can take gigabytes:

• Check Settings → General → iPhone Storage → look for "Videos" in the Photos section
• Compress 4K videos to 1080p — virtually identical on phone screens, 50-60% smaller
• Screen recordings compress extremely well (70-80% reduction)

Cool Cleaner automatically identifies videos over 50MB and offers batch compression with quality presets.

Step 5: Clear Message Attachments (1-3 GB)

iMessage, WhatsApp, and other messaging apps store every photo and video you've received:

• iMessage: Settings → General → iPhone Storage → Messages → Review Large Attachments
• WhatsApp: WhatsApp → Settings → Storage and Data → Manage Storage
• Telegram: Settings → Data and Storage → Storage Usage → Clear Cache

Step 6: Offload Unused Apps (1-5 GB)

Apps you haven't opened in months are wasting space:

1. Go to Settings → General → iPhone Storage
2. Enable Offload Unused Apps (automatic)
3. Or manually tap individual apps → Offload App

This removes the app binary but keeps its data, so you can re-download without losing settings.

Step 7: Clean Safari & App Caches (0.5-2 GB)

• Safari: Settings → Safari → Clear History and Website Data
• Social apps: Many apps (TikTok, Instagram, Twitter) have "Clear Cache" in their settings
• Spotify/Apple Music: Remove downloaded songs you no longer listen to

Step 8: Delete Old Calendar Events & Contacts (Small but Adds Up)

Not a massive space saver, but keeps your device organized:

• Cool Cleaner can scan for expired calendar events (past 2 years) and bulk-delete them
• Merge duplicate contacts to clean up your address book

Summary: Priority Cleanup Order

1. Recently Deleted album — instant, 1-5 GB
2. Duplicate & similar photos — quick with AI tools, 2-8 GB
3. Video compression — biggest single win, 3-15 GB
4. Message attachments — hidden storage hog, 1-3 GB
5. Unused apps — low effort, 1-5 GB
6. Browser & app caches — maintenance, 0.5-2 GB

Following this order, most users can recover 10-30 GB of storage in under 10 minutes.