How to Free Up Storage on Your iPhone or Android Phone
An “iPhone storage full” or “Android storage full” warning often appears when you’re trying to take a photo, install an update, or download something you need. The quickest way to free up phone storage is to find the biggest items first. A few downloaded videos or a large app can take up more space than hundreds of screenshots.
Before deleting anything important, check whether it exists only on your phone or also syncs with a cloud service. That difference determines what disappears from your other devices.
Find out what is using your storage
On iPhone
Open Settings > General > iPhone Storage. Give the storage chart and app list a moment to load.
Check the largest categories, then tap individual apps to see their details. An app’s total can include both the app itself and its Documents & Data, such as downloaded media or saved projects.
Review any storage recommendations individually so you understand what each action removes.
On Android
Open Settings > Storage. Menu names vary by manufacturer; if you cannot find it, search Settings for “storage.”
Tap categories such as apps, videos, images, and downloads to investigate. To check a particular app, open Settings > Apps, select it, then look for Storage or Storage & cache. Sort apps by size where that option is available.
Focus on the largest category first. If videos occupy most of your phone, clearing a small browser cache will make little difference.
Remove downloads you can replace easily
Downloaded entertainment is a useful starting point because you can often download it again later.
Open your video, music, podcast, and audiobook apps and check their Downloads sections. Remove finished episodes, watched films, and playlists you no longer need offline. Use the app’s Remove download option where available, and read the confirmation before proceeding.
Next, check ordinary files:
- On iPhone: Open Files > Browse. Look for Downloads under iCloud Drive or On My iPhone, depending on where your browser saves files.
- On Android: Open Files, Files by Google, or your manufacturer’s file manager. Check Downloads and Videos, sorting by size where possible.
Old ZIP archives, duplicate documents, installation files, and exported videos are worth reviewing. Open unfamiliar files before removing them.
For files in iCloud Drive, use Remove Download when you want to keep the cloud file. Choosing Delete has a different effect, explained below.
Reduce storage used by large apps
A large app may contain downloads you can remove without uninstalling it. Check its own settings first, especially for offline maps, saved videos, and editing projects.
The main storage controls have different consequences:
| Action | What it does |
|---|---|
| Offload App on iPhone | Removes the app while keeping its documents and data. Reinstallation is needed to use it again. |
| Delete or uninstall an app | Removes the app and can remove locally stored information. Cloud account data may remain. |
| Clear cache on Android | Removes temporary files that the app can usually rebuild. |
| Clear storage/data on Android | Resets the app’s local data and settings, potentially removing downloads, sign-ins, and unsynced work. |
On iPhone, find Offload App by tapping an app in iPhone Storage. It helps most when the app itself is large; retained documents and data still occupy space.
On Android, clearing a large cache can help temporarily, but it may grow again with use. Treat Clear storage as an app reset, rather than a routine cleanup button.
Before removing an app containing notes, recordings, game progress, or authentication codes, check its backup or transfer options.
Make space without losing your photo library
Videos are often worth reviewing before photos, particularly long recordings and screen captures. Keep the versions you want, and check that important originals have finished uploading or copying before removing local files.
A picture appearing in a photo app does not, by itself, prove that it is backed up.
iPhone: use photo optimisation
If you use iCloud Photos, open Settings > your name > iCloud > Photos and choose Optimize iPhone Storage.
This allows full-resolution originals to remain in iCloud while your phone keeps smaller versions as needed. It requires enough iCloud storage and time to upload and optimise your library.
Deleting a photo in Apple Photos also deletes it from iCloud Photos and your other devices using the same synced library. Use optimisation when your aim is to keep the photos while reducing their local storage.
Buying more iCloud storage does not increase your iPhone’s physical capacity. It can provide room for cloud originals so optimisation can work.
Android: remove backed-up device copies
If you use Google Photos:
- Tap your profile picture and check that backup is complete for the items you want to keep.
- Choose Free up space on this device.
- Review the amount shown and confirm removal of the backed-up device copies.
Those pictures remain in Google Photos, but you will generally need an internet connection to view the versions removed from your phone. The Australian eSafety Commissioner’s guide to Android photo backups explains this trade-off between local space and offline access.
The regular Delete or trash button in Google Photos is different: deleting backed-up items removes them from your Google Photos library and can affect other devices with backup enabled.
Review message attachments
Videos and photos received in conversations can quietly become a large storage category.
On iPhone, open Settings > General > iPhone Storage > Messages and review attachment categories or recommendations if shown. You can also open a conversation in Messages, tap the contact or group name, and review shared attachments.
On Android, check your messaging app’s conversation details or storage settings. Options vary by app; look for shared media, large files, or storage management.
Save anything you want to keep before deleting attachments. If Messages in iCloud is enabled, deletions in Apple Messages also sync to your other enabled Apple devices. Other messaging services have their own deletion rules, so check the confirmation text.
Check what deletion means for synced files
A file visible on your phone might be stored locally, downloaded from the cloud, or available only online.
In the iPhone Files app, pressing and holding a downloaded iCloud Drive file and choosing Remove Download removes its local copy while keeping the file in iCloud. Choosing Delete removes the cloud file and syncs that deletion across your connected devices.
In cloud apps on Android, look for an option to disable offline availability or remove the downloaded copy. Avoid choosing Delete or Move to trash if you intend to keep the cloud original.
If you copy files to a computer instead, open the copied files there before deleting the phone’s versions.
Check the space you recovered
Return to your phone’s storage screen after cleanup and allow time for the figures to update.
Some deleted items remain in Trash or Recently Deleted and may continue occupying space. Review those folders before permanently removing their contents; emptying them removes your recovery option.
Once you have room again, adjust automatic media downloads and remove finished offline content regularly. A quick check of your largest storage categories each month can prevent another full-storage interruption.