Why Is My Phone Storage Full? How to Free Up Space on iPhone and Android

Your phone storage is full most often because of photos and videos, apps you do not use, message attachments, and hidden data like caches and downloads. Photos and videos are usually the biggest space users by far. A few minutes of 4K video can take up as much space as hundreds of photos.

The good news is that you can free up a lot of space in just a few minutes, without losing anything important.

This guide shows you how to see what is filling up your phone, and 10 easy ways to free up space on both iPhone and Android.

Step 1: See what is using your storage

Before you delete anything, find out what is taking up the most space.

On iPhone:

1. Go to Settings > General > iPhone Storage.
2. Wait a moment for the bar at the top to load.
3. You will see a list of apps, sorted from biggest to smallest, plus suggestions to save space.

On Android:

1. Go to Settings > Storage (on Samsung phones, Settings > Battery and device care > Storage, or Settings > Device care > Storage).
2. You will see how much space is used by apps, images, videos, audio, documents, and system files.

The names may be a little different depending on your phone and software version.

Need space right now? Try this 5-minute fix

If you need space fast, for example to take a photo or install an update, do these three things:

1. Empty Recently Deleted in your Photos or Gallery app.
2. Offload or uninstall one big game or app you have not opened in a month.
3. Delete one or two long videos you have already backed up or shared.

These three steps alone often free up several gigabytes. Then come back and work through the full list when you have more time.

10 ways to free up space on your phone

1. Back up and remove photos and videos

Photos and videos are usually the biggest space users. You do not have to delete them forever. Instead, back them up to the cloud and keep smaller copies on your phone.

On iPhone:

1. Go to Settings > [your name] > iCloud > Photos.
2. Turn on Sync this iPhone (or iCloud Photos).
3. Choose Optimize iPhone Storage. Your phone keeps smaller versions and stores the full-size ones in iCloud.

Free iCloud accounts come with 5 GB of space. You may need to pay for more if you have a lot of photos.

On Android:

1. Open the Google Photos app and make sure Backup is turned on.
2. Once your photos are backed up, tap your profile picture, then Free up space. This removes copies from your phone that are already safely backed up.

Google accounts come with 15 GB of free space shared across Gmail, Google Drive, and Google Photos.

Also: Delete blurry photos, duplicates, screenshots you no longer need, and long videos you will never watch again.

2. Empty the Recently Deleted folder

When you delete photos, they do not disappear right away. They go to a folder where they stay for up to 30 days.

• iPhone: Open Photos, scroll down to Recently Deleted, and tap Delete All.
• Android: In Google Photos, tap Collections or Library, then Trash (or Bin), and empty it. On Samsung Gallery, check the Recycle bin.

This can free up a lot of space at once.

3. Delete or offload apps you do not use

Apps and games can take up a lot of space, especially games.

On iPhone: In Settings > General > iPhone Storage, tap an app to see its size. You have two choices:

• Offload App removes the app but keeps your documents and data. If you reinstall it later, your data comes back.
• Delete App removes the app and all its data.

You can also turn on Offload Unused Apps so your iPhone does this automatically.

On Android: Go to Settings > Apps, tap an app you do not use, and tap Uninstall. Some phones also offer Archive, which works like Offload on iPhone.

4. Clean up messages and attachments

Photos, videos, and voice notes in your text messages can take up a lot of space over the years.

On iPhone:

1. Go to Settings > Messages (on some versions, Settings > Apps > Messages).
2. Under Keep Messages, choose 1 Year or 30 Days instead of Forever.
3. In iPhone Storage > Messages, you can review and delete large attachments.

On Android: In the Messages app, delete old conversations with lots of photos and videos. Many phones let you sort by largest attachments.

5. Clear WhatsApp and social media storage

Chat apps save every photo, video, and voice note people send you.

• WhatsApp: Go to Settings > Storage and data > Manage storage. You can review and delete large files and forwarded media.
• Turn off Save to Photos or Media visibility so WhatsApp media does not fill up your photo gallery.
• In apps like Instagram, TikTok, and Facebook, clear the app's cache in its settings if it offers that option.

6. Clear app cache (Android)

Apps save temporary files, called cache, to load faster. Over time, the cache can grow large.

1. Go to Settings > Apps.
2. Tap an app, like Chrome or a social media app.
3. Tap Storage (or Storage & cache).
4. Tap Clear cache.

Clearing the cache is safe. It does not delete your account or settings. Do not tap Clear data or Clear storage unless you want to reset the app.

The free Files by Google app can also find junk files, duplicate files, and large files to remove.

7. Clear your web browser data

Your browser saves website data and history.

• Safari on iPhone: Go to Settings > Safari (or Settings > Apps > Safari) and tap Clear History and Website Data.
• Chrome: Open Chrome, tap the three dots, go to Delete browsing data, and choose cached images and files.

8. Remove downloaded music, podcasts, and videos

Downloaded songs, podcast episodes, and shows from streaming apps can take up many gigabytes.

• Open apps like Spotify, Apple Music, Netflix, YouTube, and Podcasts.
• Look for Downloads and remove anything you have already listened to or watched.
• In podcast apps, turn on the setting to automatically remove played episodes.

9. Delete old files and downloads

• iPhone: Open the Files app and check Downloads and Recents for large files.
• Android: Open Files or My Files and check the Downloads folder.

Delete old PDFs, videos, and files you no longer need.

10. Restart and update your phone

Restarting your phone clears some temporary files. Updating your software can also clear old files and fix storage bugs.

• iPhone: Settings > General > Software Update
• Android: Settings > System > Software update

Updates need free space to install. If you do not have enough, free some up with the steps above first.

What is "System Data" or "Other" storage?

On iPhone, you may see a large gray section called System Data. On Android, it may be called System or Other. This includes temporary files, caches, logs, and data used by the phone's software.

You cannot delete it directly, but you can help shrink it:

• Restart your phone.
• Update to the latest software.
• Delete and reinstall apps that use a lot of storage, like social media and streaming apps.
• Clear browser data.

If it is still huge, backing up your phone and doing a full reset will clear it. Only do this as a last step, and make sure your backup is complete.

Quick reference: what to clean first

How to keep your phone storage from filling up again

• Turn on cloud photo backup and storage optimization.
• Delete screenshots and blurry photos once a week.
• Turn on Offload Unused Apps on iPhone.
• Set messages to delete after 1 year.
• Stop WhatsApp from saving media to your photo gallery automatically.
• Remove downloads after you watch or listen.
• Record video in 1080p instead of 4K when you do not need the highest quality. You can change this in your camera settings.
• Check your storage once a month.

Why a full phone can cause other problems

When your storage is almost full, your phone may:

• Run slowly or freeze
• Fail to install updates
• Not let you take photos or videos
• Crash apps
• Get warm as it works harder to manage files

If your phone is also getting hot, our guide on what makes a phone overheat explains the common causes and how to cool it down. And if your iPhone will not charge while you are working on this, see our guide on fixing an iPhone that is not charging.

When it is time for more storage

If you have cleaned up everything and your phone is still full, you might need more space:

• Pay for more cloud storage, like iCloud+ or Google One.
• Use a microSD card if your Android phone has a card slot.
• Move photos to a computer or external drive.
• Get a phone with more storage next time. For most people today, 128 GB is the minimum, and 256 GB is better if you take a lot of photos and videos.

The bottom line

Your phone storage is usually full because of photos, videos, apps, and message attachments. First, check your storage settings to see what is using the most space. Then back up your photos to the cloud, empty the Recently Deleted folder, offload apps you do not use, and clean up messages and downloads. Check your storage once a month, and you will not see that "Storage Full" message again.