What clearing your iPhone actually means
Clearing your iPhone means removing data you no longer need to free up storage space or prepare the phone for someone else to use. There are three different levels: deleting individual apps and files, erasing everything but keeping your settings and data, or doing a complete factory reset that wipes the phone entirely.
Most people need to clear space because their phone is running slowly or the storage is full. Others clear their phone before selling it, giving it away, or trading it in. The method you choose depends on whether you want to keep your photos, messages, and settings or start completely fresh.
Key Takeaways
- Deleting apps, photos, and old messages is the fastest way to free up space without losing anything important.
- Offloading apps removes the app but keeps your data, so you can reinstall it later without losing progress.
- Erasing all content and settings removes everything but lets you restore from a backup afterward.
- A factory reset wipes the phone completely and cannot be undone, so back up first if you want to keep anything.
- Before any major clearing, back up your iPhone to iCloud or a computer so you do not lose photos, contacts, or messages.
Free up space by deleting apps you do not use
Open Settings, tap General, then tap iPhone Storage. You will see a list of your apps sorted by size, with the largest ones at the top. The apps taking the most space are usually games, social media apps, and video streaming services.
To delete an app, tap its name, then tap Delete App. Choose Delete App again to confirm. The app is removed immediately, but your data for that app (like game progress or saved passwords) is also deleted. If you think you might use the app again later, use Offload App instead — this removes the app but keeps your data, so reinstalling it later restores everything.
Deleting apps is safe and reversible. You can reinstall any app from the App Store at any time. Start with apps you have not opened in months — most people find they do not miss them.
Clear photos and videos to recover the most space
Photos and videos take up far more storage than anything else on your phone. Open the Photos app, tap the Albums tab at the bottom, then scroll down and tap Recently Deleted. Any photo or video you deleted in the last 30 days sits here. Tap Select in the top right, tap all the photos you want to remove permanently, then tap Delete.
If you want to keep your photos but move them off your phone, turn on iCloud Photos in Settings > [Your Name] > iCloud > Photos. This uploads your entire library to iCloud and removes the full-resolution versions from your phone, keeping only smaller versions. You can still see and search all your photos in the Photos app, but they take up almost no space on the device itself.
Before deleting photos permanently, make sure they are backed up somewhere. If you use iCloud Photos, they are already backed up. If not, connect your iPhone to a computer and use the Photos app (on Mac) or File Explorer (on Windows) to copy them to your computer first.
Delete old messages and attachments
Messages, especially those with photos and videos, add up quickly. Open Settings, tap General, then tap iPhone Storage. Look for the Messages app in the list — if it is large, you have a lot of old conversations stored.
Open the Messages app, tap Edit in the top left, then tap the red circle next to any conversation you want to delete. Tap Delete to confirm. You can also swipe left on a conversation to delete it faster. Deleting a conversation removes all messages and attachments in that thread.
If you want to keep some messages but delete the attachments, open a conversation, tap Edit, then tap the photos or videos you want to remove. This frees up space without losing the text of the conversation itself.
Erase all content and settings if you are giving away your phone
If you are selling, trading in, or giving your iPhone to someone else, you need to erase everything on it. Before you do this, back up your phone to iCloud or a computer so you can restore your data later if needed.
To back up to iCloud, go to Settings > [Your Name] > iCloud > iCloud Backup, then tap Back Up Now. Wait for the backup to finish — this can take several minutes depending on how much data you have. To back up to a computer, connect your iPhone with a cable, open Finder (Mac) or iTunes (Windows), select your phone, and click Back Up Now.
Once your backup is complete, go to Settings > General > Transfer or Reset, then tap Erase All Content and Settings. Enter your Apple ID password and confirm. The phone will restart and erase everything, then show the setup screen as if it were brand new. This process takes 5 to 15 minutes.
Restore from backup after erasing
After erasing your phone, you will see the setup screen. Follow the prompts until you reach the Apps & Data screen. Choose Restore from iCloud Backup or Restore from Mac/PC depending on where you backed up. Sign in with your Apple ID and select the backup you just created.
Your phone will download and restore all your photos, messages, contacts, and app data. This can take 30 minutes to an hour depending on your internet speed and how much data you have. Do not unplug or restart your phone during this process.
Once restoration is complete, your phone will look exactly as it did before you erased it. All your apps, photos, and settings are back. If you are keeping the phone for yourself, you are done. If you are giving it away, skip the restoration step and hand over the phone after the erase completes.
Clear cache and temporary files without losing apps or data
Your phone stores temporary files called cache that help apps load faster. Over time, this cache can take up several gigabytes of space. Unlike deleting apps or photos, clearing cache does not remove anything you created — it just removes temporary files that your phone can recreate if needed.
Go to Settings > General > iPhone Storage. Scroll through the list and look for apps with large sizes that you use regularly. Tap the app name, then tap Offload App. This removes the app but keeps your data. Then tap Reinstall App to put it back. This process clears the cache without losing your progress or settings in that app.
You can also clear cache for Safari by going to Settings > Safari, scrolling down, and tapping Clear History and Website Data. Choose how far back to clear (last hour, today, last week, or all time), then tap Clear History and Data. This removes browsing history and temporary files but does not affect your bookmarks or saved passwords.
Frequently Asked Questions
Will clearing my iPhone delete my photos and messages?
Only if you use Erase All Content and Settings or a factory reset. Deleting individual apps, photos, or messages removes only those items. If you back up to iCloud or a computer first, you can restore everything afterward.
How much space will I free up by deleting apps?
It depends on which apps you delete. Large games and video apps can free up 1 to 5 gigabytes each. Smaller apps like messaging or weather apps free up 50 to 500 megabytes. Check iPhone Storage in Settings to see exactly how much space each app uses before you delete it.
Can I undo erasing all content and settings?
No, erasing all content and settings cannot be undone. The phone will be completely wiped. However, if you backed up to iCloud or a computer before erasing, you can restore everything from that backup afterward.
What is the difference between offloading and deleting an app?
Offloading removes the app but keeps your data, so reinstalling it later restores your progress and settings. Deleting removes both the app and your data. Use offload if you might use the app again; use delete if you are sure you will not.
Do I need to back up before clearing space?
You only need to back up if you are doing a complete erase or if you are deleting photos and messages you want to keep. If you are just deleting apps or old messages you do not need, backing up is not necessary.