If your iPhone keeps telling you storage is almost full, you are not alone. It is one of the most common frustrations iPhone users face, and it tends to creep up on you — a few app updates here, a few thousand photos there, and suddenly you cannot download anything new. The good news is that most iPhones have far more recoverable space than people realise. Here is a step-by-step guide to finding it and freeing it up.
Check What Is Actually Using Your Storage
Before you delete anything, get a clear picture of where your space is going. Go to Settings > General > iPhone Storage. Give it a few seconds to load — iOS will build a colour-coded bar at the top showing how much space is used by apps, photos, media, system data, and other categories.
Scroll down to see every app listed by size. This is your starting point. The biggest offenders are usually Photos, Messages, and apps you barely use any more.
Enable iCloud Photos and Optimise iPhone Storage
If Photos is at the top of your storage list, this is the single most effective change you can make. Go to Settings > Photos and enable iCloud Photos. Then select Optimise iPhone Storage.
What this does: your original, full-resolution photos and videos are uploaded to iCloud. Your iPhone keeps smaller, device-optimised versions locally. When you want to view or edit the full-resolution version, it downloads on demand. You keep access to every photo — you just stop storing all of them on the device at once. The space saving can be enormous if you have years of photos and videos.
Note: this requires sufficient iCloud storage. The free tier gives you 5 GB, which fills quickly. A 50 GB plan costs 79p per month and is worth it for most people.
Empty the Recently Deleted Album
When you delete photos or videos, iOS holds them in a Recently Deleted album for 30 days before permanently removing them. That means space is not freed until they are purged. Open the Photos app, scroll to the bottom of your albums list, tap Recently Deleted, then tap Select and Delete All. Do this straight after enabling iCloud Photos for immediate results.
Delete or Offload Unused Apps
Back in Settings > General > iPhone Storage, go through your app list and be honest about what you actually use. Games, streaming apps, and large productivity tools are usually the biggest culprits.
You have two options:
- Delete the app — removes the app and all its data permanently.
- Offload the app — removes the app itself but keeps its data. If you reinstall it later, your settings and progress are restored.
Offloading is ideal for apps you use infrequently but do not want to lose your data from — banking apps, travel apps, or seasonal tools. To enable automatic offloading, go to Settings > General > iPhone Storage and tap Enable next to Offload Unused Apps. iOS will automatically offload apps you have not opened in a while.
Clear Safari Cache and Website Data
Safari stores cached website data, cookies, and browsing history, which builds up over time. Go to Settings > Safari and tap Clear History and Website Data. Confirm the prompt.
This will sign you out of websites and remove saved browsing history, so be aware if you rely on automatic logins. The space saving is rarely dramatic, but on a nearly-full device every megabyte counts.
Delete Old Messages and Large Attachments
The Messages app can quietly consume gigabytes, especially if you send and receive photos and videos regularly. There are two approaches:
- Go to Settings > General > iPhone Storage > Messages and tap Review Large Attachments. This shows every attachment stored in Messages, sorted by size. Select and delete the largest ones.
- In the Messages app itself, long-press a conversation you no longer need and tap Delete. Entire conversations with lots of media can free up significant space in one go.
You can also set Messages to automatically delete old conversations. Go to Settings > Messages > Keep Messages and change it from Forever to 1 Year or 30 Days.
Remove Downloaded Podcasts, Music, and Video
Downloaded media is one of the easiest wins. Open the Podcasts app and delete any episodes you have already listened to — or go to Settings > Podcasts and turn on Remove Played Episodes so it happens automatically.
In the Music app, go to your library, find downloaded albums or playlists, and swipe left to delete them from your device. Streaming from Apple Music does not use local storage. In the TV app, delete any downloaded films or series episodes you have watched.
Review WhatsApp Media
WhatsApp automatically saves photos, videos, and voice notes sent to you, and these accumulate fast. Open WhatsApp, go to Settings > Storage and Data > Manage Storage. You will see a breakdown by conversation with the largest ones at the top. Tap into any conversation to review and delete media you do not need.
You can also stop WhatsApp saving media to your camera roll by going to Settings > Storage and Data and turning off Save to Camera Roll. This prevents duplication between WhatsApp and your Photos library going forward.
Move Documents to iCloud Drive or OneDrive
If you store PDFs, spreadsheets, or other documents locally on your iPhone, move them to cloud storage and delete the local copies. Both iCloud Drive and Microsoft OneDrive allow you to access files on demand rather than keeping them on the device at all times.
In the Files app, you can move files from On My iPhone directly into iCloud Drive or another connected cloud provider. Once moved, the local copy is removed and replaced with a cloud link.
When to Upgrade Your Storage
If you have worked through all of the above and you are still consistently sitting at 90% capacity or above, it is worth considering your options. Unlike Android devices, iPhones do not support external storage cards — your only hardware option is a new device with more storage.
Before committing to that, check whether iCloud+ storage expansion covers your needs. For most people, a 200 GB iCloud plan at £2.99 per month solves the problem entirely by keeping photos, documents, and backups off the device.
If you regularly shoot ProRAW photos, 4K video, or use your phone for professional work and you still run out of space after offloading to cloud storage, upgrading to a higher-storage iPhone model at your next renewal is the most practical long-term solution.
Quick Summary
- Check usage in Settings > General > iPhone Storage before doing anything else
- Enable iCloud Photos with Optimise iPhone Storage for the biggest single saving
- Empty the Recently Deleted album immediately after deleting photos
- Offload apps you rarely use rather than deleting them if you want to keep your data
- Clear Safari cache, review Messages attachments, and delete downloaded media
- Audit WhatsApp storage and turn off auto-save to camera roll
- Move documents to iCloud Drive or OneDrive
- If you are consistently near capacity, consider upgrading your iCloud plan before your next device
Most iPhones have more recoverable space than their owners realise. A methodical pass through the steps above typically frees several gigabytes within minutes, without losing anything you actually care about.
