Freeing up space on iPhone: step-by-step guide

Introduction / Why This Is Needed

A lack of free space on an iPhone or iPad is a common issue that leads to errors when installing updates, an inability to take photos, or download new apps. In this guide, you'll learn how to systematically free up storage on an iOS device using built-in tools and simple actions. We'll cover how to analyze storage usage, remove unnecessary data, and configure automatic optimization so your device runs smoothly again without limitations.

Requirements / Preparation

Before you begin, ensure that:

• You have an iOS 15 or newer device.
• You are signed in to your Apple ID (for using iCloud and syncing).
• Your device is connected to Wi-Fi (for uploading data to the cloud if you decide to enable photo optimization).
• You are prepared to temporarily delete some data, so it's recommended to back up important files via iCloud or a computer.

Step-by-Step Instructions

Step 1: Analyze Storage Usage

First, you need to understand what is specifically taking up space on your device. This will help you target the largest categories for cleanup.

1. Open Settings → General → Your Device (e.g., "iPhone Storage").
2. Wait for the data to load. You will see a color-coded chart and a list of categories (Apps, Photos, System Data, etc.).
3. Pay attention to apps that take up more than 1 GB. Often these are social networks (Instagram, WhatsApp), messengers, browsers with cache, and video streaming services.

💡 Tip: If "System Data" is large in the list, it may indicate accumulated cache and temporary files. We will address this later.

Step 2: Delete Unnecessary Apps and Their Data

Apps you don't use can occupy hundreds of megabytes or gigabytes, especially if they store offline content (maps, videos, audio).

1. In the Storage section, scroll through the app list.
2. Find the app you want to remove and tap on it.
3. Select "Delete App" → "Delete App" (this removes both the app and all its data).
4. For frequently used apps that are temporarily not needed, you can use the "Offload App" feature (it saves documents and data but deletes the app itself). This is useful for large games.

⚠️ Important: Deleting some apps (e.g., banking apps) may require reconfiguration. Make sure you remember your logins and passwords.

Step 3: Clean Up Photos and Videos

Media files are the most frequent "storage hogs." Even thousands of photos can take up tens of gigabytes, and videos even more.

1. Open the "Photos" app.
2. Go to the "All Photos" section and start manually selecting:
   • Delete blurry, duplicate, or unwanted shots.
   • Pay special attention to videos: even short 4K clips can weigh hundreds of megabytes.
3. After deleting, go to Albums → "Recently Deleted" and empty this album (files are stored for 30 days and then automatically deleted, but space is only freed after emptying).
4. Enable iCloud Storage Optimization:
   Settings → your name → iCloud → Photos → check "Optimize Storage".
   Compressed versions will be stored on the device, while originals remain in the cloud. This can save gigabytes.

Step 4: Clear Cache and Temporary Data

App caches and system temporary files accumulate over time and can occupy several gigabytes.

1. For browsers (Safari, Chrome):
   Settings → Safari → "Clear History and Website Data" (or similar in Chrome). This removes cache, cookies, and history.
2. For social networks and messengers:
   Go into each app's settings (e.g., WhatsApp → Storage and Data → "Manage Storage") and delete unnecessary files.
   If the app lacks this option, use the app deletion method (see Step 2) — this will clear all cache.
3. System temporary files:
   Often they can be cleared by restarting the device. Also check apps that actively use the internet (podcasts, streaming) — they may store cache in their folders. Deleting and reinstalling such apps helps.

Step 5: Manage Offline Content

If you download music, podcasts, audiobooks, or books for offline use, they can take up significant space.

1. Apple Music / iTunes:
   Settings → Music → "Download Music" (turn off if not needed).
   In the "Music" app, go to "Library" → "Downloaded" and delete tracks you no longer listen to.
2. Podcasts:
   In the "Podcasts" app, find episodes you've already listened to and delete them (can be done in bulk in settings).
3. Books and Audiobooks:
   In the "Books" or "Audiobooks" app, delete downloaded files you've already read.

Step 6: Use Built-in iOS Recommendations

Starting with iOS 15, the system itself suggests actions to free up space.

1. Go back to Settings → General → Storage.
2. Scroll down to the "Recommendations" section.
3. Enable available options, such as:
   • "Automatically Delete Large Apps" — the system will delete apps you don't use that take up a lot of space (data is preserved in iCloud).
   • "Delete Unused Videos" — removes old clips from "Photos."
   • "Clear Old Messages" — automatically deletes old messages with attachments.

Verify the Result

After completing all steps, return to Settings → General → Storage. Ensure that:

• Free space has increased by the desired amount (e.g., by 5-10 GB).
• The chart shows reduced usage in categories like "Photos," "Apps," and "System Data."
• The device operates without "Not Enough Storage" errors.

Also verify that important data (photos, contacts, documents) is saved in iCloud or on your computer.

Potential Issues

Issue: After enabling iCloud "Storage Optimization," photos on the device appear blurry.
Solution: This is normal — compressed copies are stored on the device. Full-size originals are available when connected to the internet. If you need originals locally, temporarily disable optimization and wait for them to download (requires internet).

Issue: Deleting an app did not free up the expected amount of space.
Solution: Some apps (e.g., WhatsApp) store data in the "Documents & Data" folder. Completely deleting the app via Settings → Storage → Delete App removes both the app and its data. Simply deleting the app icon from the home screen leaves the data behind.

Issue: The "System Data" category still shows a lot of space used.
Solution: System Data includes cache, logs, and temporary files. They are usually cleared after a restart. If not — try temporarily disabling iCloud features (e.g., iCloud Drive), then re-enable them. As a last resort, resetting network settings (Settings → General → Transfer or Reset iPhone → Reset Network Settings) may help, but this is not guaranteed.

Issue: I cannot delete large files from "Photos" — they sync back from iCloud.
Solution: Ensure you are deleting files from "All Photos" and not just from albums. Also check if "Shared Albums" with automatic downloading is enabled. Temporarily disable iCloud Photos (Settings → Photos → iCloud Photos) before mass deletion.