RoomForGemsWhen an Android phone says storage is full, it is tempting to install the first cleaner app you see. Please wait. Android, Google and Samsung already give you good free tools. This guide goes through them in the order worth trying.
One note before we start. Android phones are made by many companies. Menu names and places differ between models and Android versions. If a step looks a little different on your phone, look for the closest match.
Step 1: See what is using the space
Open Settings and tap Storage. You will see how full the phone is, split into groups such as images, videos, apps and system. Tap a group to see what is inside.
Google's help page also describes a Free up space button on this screen. It lets you pick files by category and move them to the trash. Some phones also offer Smart Storage, which Google says clears backed-up photos and videos when storage runs low.
On a Samsung Galaxy, the same information lives in Device care. See Step 5.
Step 2: Use the Clean suggestions in Files by Google
Many Android phones come with the Files by Google app. If yours does not, it is free in Google Play.
Open it and find the Clean section. Google lists what it can help with there: temporary app files, duplicate files, recommended files, unused apps and screenshots.
Each suggestion appears as a card that shows how much space it would free. Tap a card, look through what it picked, and only then confirm. Some deletions here are permanent, so read each card before you tap.
Step 3: Let Google Photos remove copies already backed up
If you back up with Google Photos, your phone may still hold a full copy of every photo. You can remove those phone copies and keep the backed-up ones.
- Open the Google Photos app and sign in.
- Tap your profile picture or initial at the top.
- Tap Free up space on this device.
- Check how much space it will free, then tap the button to confirm.
Google is clear about two things. First, back up before you do this: "make sure that they're backed up" (Google Photos Help, read on 15 October 2026). Second, this "deletes photos from your device" (Google Photos Help, read on 15 October 2026). The photos stay in your Google Photos library. You will not see them in your phone's own gallery or while offline.
Google also says photos and videos less than 30 days old may stay on the phone.
Be careful not to mix this up with deleting in Google Photos. Deleting a backed-up photo there removes it from your phone and from your Google Photos library. Deleted items wait in the Google Photos trash for 30 days before they are gone for good.
Step 4: Clear an app's cache
Apps keep temporary files, called a cache. Some apps let this grow large. You can clear it for one app at a time.
- Open Settings and tap Apps.
- Tap the app.
- Tap Storage.
- Tap Clear cache.
The cache will build up again as you use the app. That is normal.
Do not confuse this with Clear storage or Clear data. Google says that one permanently deletes all of the app's data. That can mean your logins, settings and saved files inside that app. Try Clear cache first.
While you are in Apps, look for apps you no longer use. Google points out you can uninstall them and reinstall later from Google Play. The Play Store can also archive apps you rarely use. Google says archived apps keep your data.
Step 5: On a Samsung Galaxy, use Device care
Samsung has its own storage screen. These are Samsung's steps.
- Open Settings.
- Tap Device care.
- Tap Storage.
- Tap a category, such as Images, Videos, Audio files or Documents.
- Select files you no longer need, tap Delete, then Move to Trash.
Samsung's Canadian help page also mentions Unused apps on this screen, for apps you have not opened in 30 days. Samsung says "screens and settings may vary by model and by country" (Samsung, read on 15 October 2026). So your phone may show a little more or a little less.
Empty the Gallery trash on Samsung
Photos you delete in Samsung's Gallery go to its Trash first. They still use space there.
- Open Gallery.
- Tap the menu (three lines).
- Tap Trash.
- Tap More options (three dots), then Empty, then Delete.
This cannot be undone. Samsung's help page shows items kept in Trash for 30 days before they are removed (not verified for every model).
Step 6: Move files to an SD card, if your phone has one
Some Android phones have a memory card slot. Many newer ones do not. If yours does, you can move photos and videos to the card.
On a Samsung phone, Samsung's steps are: open My Files, select the files, tap Move, choose SD card, then Move here. Some apps can move to the card too, under Settings › Apps › the app › Storage › Change, but only if that option appears.
You can also move files to a computer with a USB cable. Google lists this as one more way to free space.
Step 7: Check messaging apps
Chat apps often save every photo, video and voice note you are sent. Over the years this can add up to many gigabytes. That media lives inside the messaging app.
Open your messaging app and look in its settings for a storage section. Many chat apps can list large files or show which chats use the most space (not verified for every app). Delete the big items you do not need, and save precious ones first.
On a Samsung phone, Samsung also describes a Delete old messages setting in the Messages app, under More options › Settings › More settings.
What about System storage?
Sometimes the System part of the storage bar looks large. This is the space Android itself needs to run. You can't delete it, and no app can clear it, whatever an ad may say. The steps above are where real space comes from. For an iPhone version of this question, see what System Data is on iPhone.
Where RoomForGems fits, honestly
For many people, the steps above are enough. If you still need space, it is usually photos and videos. That is where RoomForGems can help.
It looks at your gallery and finds:
- copies and similar shots, grouped, with the best shot picked and the reason shown, so you can change the pick
- screenshots and screen recordings, month by month
- your largest videos, biggest first, with the size of each
- videos recorded by accident, such as black or pocket recordings, listed for you to check
On Android, RoomForGems asks only for the normal access to your photos and videos. It never asks for access to all files. Google's own policy says apps can reach media "without the need for the access All files permission" (Play Console Help, read on 15 October 2026).
Everything happens on your phone. No photos leave it. Nothing is deleted without Android's own confirmation dialog, and you can review every item first. It cannot clear System storage, other apps' caches or your chats. See what it can't clean.
Scanning is free, and you can free up to 1 GB without paying. After that it is $9.99, charged once through Google Play. There is no subscription.
More help: how to find and remove large videos, and how to free up space without deleting any photos. If a cleaner app has already charged you weekly, here is how to cancel and ask for a refund.