Start by seeing what's actually taking up space
Before you delete anything, open Settings, tap General, then Storage & iCloud Usage. Under iPhone Storage, you'll see a list of apps ranked by size. This tells you exactly what's eating your space — usually Photos, Messages, or a single large app — instead of guessing.
The storage meter at the top shows your total capacity and how much is left. If you're below 1 GB free, your phone will start refusing to install updates and may slow down. If you're between 1 and 5 GB free, you have some breathing room but should still clean up soon.
Key Takeaways
- Photos and videos take up the most space on most iPhones; deleting old ones or moving them to iCloud Photos is the fastest way to free up room.
- You can delete an app but keep its data by offloading it, which frees space without losing your login information or saved games.
- Messages with photos and videos attached pile up quickly; clearing old conversations can free several gigabytes in minutes.
- Cached data from apps and Safari builds up over time; clearing Safari history and app cache is safe and won't delete your accounts or settings.
- iCloud Photos syncs your library to Apple's servers, so you can delete local copies from your phone while keeping the originals backed up.
Delete photos and videos selectively, or move them all to iCloud
Photos and videos are almost always the largest files on your phone. You have two paths: delete the ones you don't need, or move your whole library to iCloud Photos and delete the local copies.
To delete individual photos, open Photos, tap Select in the top right, choose the ones you want gone, and tap Delete. You can also go to the Recently Deleted album and permanently erase them from there — they stay in Recently Deleted for 30 days before disappearing on their own.
To move everything to iCloud Photos, go to Settings, tap your name at the top, then iCloud, then Photos. Turn on iCloud Photos. Your phone will upload all your photos and videos to Apple's servers. Once the upload finishes (this can take hours or days depending on how many photos you have), go back to Settings > General > iPhone Storage, find Photos in the list, and tap it. Tap Optimize iPhone Storage. This keeps your full-resolution originals on iCloud but stores only smaller versions on your phone, freeing up gigabytes when ready.
If you don't want to use iCloud Photos, you can also export photos to a computer or external drive, then delete them from your phone. Connect your iPhone to a Mac or Windows PC, open the Photos app or File Explorer, and drag your photos to a folder on your computer.
Clear old messages and their attachments
Messages with photos, videos, or voice memos attached can consume hundreds of megabytes without you realizing it. Go to Settings > General > iPhone Storage, find Messages, and tap it. You'll see how much space it's using.
The fastest way to free up this space is to delete old conversations. Open Messages, swipe left on a conversation, and tap Delete. If you want to keep the conversation but remove the attachments, open it, scroll to the oldest messages, tap Edit in the top left, select the messages with photos or videos, and tap Delete.
You can also set Messages to auto-delete old conversations. Go to Settings > Messages > Keep Messages and choose 30 Days or 1 Year. Messages older than that will delete automatically, though the conversation itself stays until you manually remove it.
Offload apps you rarely use instead of deleting them
Deleting an app removes it from your phone but also erases its data — your login information, saved games, settings, and cached files all disappear. Offloading an app removes it from your phone but keeps all that data on iCloud, so when you reinstall it later, everything is still there.
Go to Settings > General > iPhone Storage, find the app you want to offload, and tap it. Tap Offload App, then Offload App again to confirm. The app icon will stay on your home screen with a small cloud icon on it. Tap it to reinstall the app with all your data intact.
This is useful for apps you use occasionally but don't need every day — games, seasonal apps, or tools you use a few times a year. You free up space without losing your progress or settings.
Clear Safari history, cache, and website data
Safari stores a copy of every website you visit, plus login cookies and form data. Over time this adds up. Go to Settings > Safari and scroll down to Clear History and Website Data. Tap it and choose how far back to clear — Last Hour, Today, Last Week, Last Month, or All Time. Then tap Clear History and Data.
This removes your browsing history, cookies, and cached website files. It will not delete your saved passwords or credit card information — those stay in iCloud Keychain. You may have to log back into some websites, but your accounts themselves are safe.
If you want to clear cache without clearing history, go to Settings > Safari > Advanced > Website Data and tap Remove All Website Data. This keeps your history but deletes the temporary files websites store on your phone.
Delete cached data from individual apps
Apps like Instagram, TikTok, Spotify, and Maps store copies of photos, videos, and maps on your phone so they load faster. You can delete this cached data without losing your account or settings.
Go to Settings > General > iPhone Storage, find the app, and tap it. If the app has cached data, you'll see an option to Offload App or Delete App. Tap Delete App, then Delete App again. This removes the app and its cache but not your account — when you reinstall it from the App Store, you'll log back in and your data will be there.
Some apps let you clear cache directly. Open the app, go to its settings, and look for Storage, Cache, or Temporary Files. Spotify, for example, has a Downloads section where you can delete downloaded songs. Maps has an Offline Maps section where you can delete maps you've downloaded.
Use iCloud+ to store files instead of keeping them on your phone
If you have a lot of documents, PDFs, or files, storing them in iCloud Drive instead of on your phone frees up local storage. Go to Settings, tap your name, then iCloud, then iCloud Drive. Turn it on if it's not already on.
Open the Files app, tap iCloud Drive, and create folders for your documents. You can move files there from your phone, and they'll sync to iCloud. Then delete the local copies from your phone. You can still open them from the Files app — they'll read from iCloud when you need them.
This works well for large files like videos you're editing, PDFs you reference occasionally, or photos you want to keep but don't need on your phone every day.
Frequently Asked Questions
Will clearing my storage delete my photos or messages permanently?
Only if you permanently delete them. If you delete a photo, it goes to Recently Deleted for 30 days before disappearing. If you delete a message, it's gone when ready unless you have a backup. Before you delete anything, make sure you've backed it up to iCloud or moved it to a computer.
What's the difference between offloading an app and deleting it?
Offloading removes the app from your phone but keeps your data on iCloud, so you can reinstall it later with everything intact. Deleting removes both the app and its data. Use offload for apps you use occasionally; use delete for apps you're done with.
Can I delete my iCloud backup to free up space on my phone?
No — your iCloud backup is stored on Apple's servers, not on your phone, so deleting it won't free up iPhone storage. But if you're running out of iCloud storage (which is separate from phone storage), you can delete old backups or upgrade to iCloud+.
Is it safe to clear Safari history and cache?
Yes. Clearing history and cache won't delete your passwords or credit cards — those are stored separately in iCloud Keychain. You may have to log back into websites, but your accounts are safe.
How long does it take to move photos to iCloud?
It depends on how many photos you have and your internet speed. A few hundred photos might take an hour; thousands could take a day or more. The upload happens in the background, so you can use your phone while it's uploading. Check Settings > iCloud > Photos to see the progress.