You have deleted pictures, cleared old video files, and may have uninstalled some of your applications, yet your phone still displays a “phone storage full” warning. Most likely you haven’t broken your phone. On an iPhone, when you delete a picture, it’s actually moved into a holding area (such as iCloud or Google Photos). Also, most of your remaining pictures reside inside applications (not galleries) and deleted data will remain available for 30 days from the time deleted by the Apple or Samsung Galaxy phones.
The only thing to note before troubleshooting your phone storage issue is that the amount of free/available memory on your device and the total storage in Google/iCloud are two separate numbers. According to Google, it may take up to 48-72 hours after a major deletion for the changes to appear on Goggle; however, the same timeline does not apply to your actual device’s internal storage. The solutions provided in this article will all utilize built-in tools on your phone. Although you still may have additional memory available, the space has simply been “hidden”. Therefore, the key is discovering where the hidden “dustbins” are.
Why the Storage Number Refuses to Update
A “delete” button doesn’t actually delete data right away. It moves the file into a temporary area. This temporary area will not be emptied, nor will space be released until the end of the timer for that temporary area. If you are unable to see updated space for deleted files, first determine which of the three separate temporary holding areas are being used. Knowing the number alone will not help you.
Deleted photos wait in a bin for 30 days
On an iPhone (Apple’s claims), deleted photos and videos are stored in a Recently Deleted album for 30 days before they are permanently deleted. The Recently Deleted album is locked by default on iOS 16 and later devices, which uses either Face ID or Touch ID as a security feature. This could easily be forgotten. There are two ways in which users are caught off guard: (a) if a user shares photos through an iCloud Shared Photo Library, only the person who added a photo to the library can delete it from Recently Deleted permanently; and (b) photos that were copied to an iPhone from a computer cannot be removed from the Photos app until the user refuses to continue syncing them from the computer.
Google Photos on an Android device keeps deleted photos in the Trash for 30 days after the date of deletion. However, Google also states that deleted photos may still exist on a removable memory card (if the user has a removable memory card), and that they must, therefore, be deleted using the actual gallery application built into the users’ phone. In addition, if a user is using a Galaxy device with One UI version 6, Samsung has unified the individual Trash Bins of My Files, Gallery, and Voice Recorder into a single Recycle Bin that cannot be turned off. Items that have been placed in this Recycle Bin can remain for a maximum of 30 days before being permanently deleted.
The second 30-day rule is commonly confused with the first one. When utilizing Google’s “Free up space on this device” tool for photos and videos under 30 days old may be kept on your device that were created within the last 30 days, it does not actually delete these files from your device when the tool is run. Therefore, when you have just created a bunch of new videos, it is very possible that the free up space tool will miss them completely.
Your account and your phone are counted separately
With a free Google account, users receive up to 15 gigabytes of storage space, which is shared across Gmail, Google Drive and Google Photos. Google also includes the backups of WhatsApp on Android devices within the 15 gigabyte limit, as well as the Spam and Trash folders in Gmail, and also any backed up data from Android devices. After you have deleted many files, Google indicates that it can take up to 48-72 hours for your account size to reflect the deletions.
This time delay is the reason behind a thread in the Google Photos Community from June 16th, 2025, where a user deleted almost 1,000 photos and videos, emptied the Trash folder, and still showed their storage space as full the following day. This delay documented by Google for your account applies to your storage account only; there does not appear to be any indication from Google that they have a similar built-in delay for the storage bar on your phone itself. If your phone’s storage is full, waiting three days will not solve the problem.
When deleting old photos frees nothing at all
Google states that all photos that were backed up using the Storage Saver (previously known as “High quality”) setting prior to June 1st, 2021 do not count against the 15-gigabyte limit of your Google Storage account, before 01/06/2021 never counted against your storage. Therefore, by deleting any of these files, you will not free up any storage space in your Google account. If your Google storage is full, and you are deleting older photos that were stored on your account from the past, you may be deleting the only items that do not count against your free storage quota.
The Hidden App Hoarders (That Don’t Show Up in Your Gallery)
If your phone is full but the trash has been emptied, you need to check which applications you currently have installed and which ones you uninstalled. According to Google Android’s guidelines, the appropriate method for deleting content downloaded via a Google product is through the application used to perform the download, delete it from the app you used to download it. This serves as the foundation of this section; in most cases, applications are the largest consumers of space.
Cache, downloads and backups are different things
While clearing cache and clearing storage are both methods of deleting unneeded files stored by an application, they should be treated separately. The most common way to confuse these two deletion options is by assuming they do the same thing. Google defines Clear Cache as deleting only temporary files and indicates that it will have a detrimental effect on an application’s loading speed the next time it is opened. Conversely, Clear Storage indicates that Google has permanently deleting all app data and recommends deleting as much as possible from within the application before using the Clear Storage option. Additionally, using Clear Storage may log you out of the application and remove any locally saved messages and conversations.
The iPhone allows users to see the storage usage on their iPhone by accessing the per application view in the iPhone Storage settings. There are two methods available in this view; Offload and Delete Application. When you Offload an application, you remove it from your device, but keep all associated files and data, frees the app but keeps its documents and data. Alternatively, by deleting an application, you remove both the application and all associated files and data. Apple also indicates that cache and temporary files do not count toward the total space used by an application. Therefore, when looking at an application in the iPhone’s per application view, your understanding may not be complete.
WhatsApp keeps media, copies and local backups
WhatsApp’s help centre says deleted items might still be saved on your device, and if you have several copies of the same item, you have to delete all of them to free the space. Its Manage storage screen shows WhatsApp’s total at the top and lets you sort media by largest. Deleting from there is permanent, and you can’t download the item again from the chat. WhatsApp also says its storage figure can differ from your phone’s, because the two calculate storage differently. A mismatch between them isn’t necessarily a fault.
For those using an Android phone, there are also local backups on top of everything that has been mentioned. Android Police states in an article that WhatsApp will create local backups of your chat each day and will hold on to seven days worth of those local backups. The backup files are contained in a Databases folder under Android > Media > com.whatsapp > WhatsApp. This guide has not been able to confirm this information directly from an official WhatsApp page, so you should take this report as that of Android Police and treat it as a factual source. The files referenced are the history of the chats you have on WhatsApp. Unless you can verify that your backup has recently been completed and you have received confirmation from another source, do not edit or move any of the files you have in this location.
“”” Some file explorer apps may show this folder as either empty or obstructed. This is expected. Although Google has imposed restrictions on applications to access another application’s private information starting with the Android Versions 11 and later, which restricts apps from reaching other apps’ private folders. When an application shows this folder as blocked it is not an indication that the files within that folder have been permanently deleted. “””
Telegram and Spotify manage their own storage
Telegram saves your messages in the “cloud” and allows you to use the “clear cache” option without logging out of the app. You can also set your account inside of Telegram to remove files from cache after a specific amount of time has passed since you opened them; however, if you open the file again after it’s cleared from cache, it will automatically download from the “cloud” again to your device.
Spotify says it uses your device’s memory for two jobs: caching parts of what you stream, and holding downloads. Each has its own control inside the app. In a Spotify Community thread, a Spotify moderator explained that lossless streaming builds up cached data “up to a point”. Streaming quality affects how quickly that cache fills again.
What “System Data” and “Other” Storage Actually Are
The grey band of storage in your storage usage breakdown is one that is currently unexplained by anything seemingly provided by either Apple or other sources, according to the information listed in iOS versions of the iPhone today. This grey band is identified in iPhones with the latest iOS versions as System Data; however, in previous and now current versions, all of the help articles from Apple’s support site have listed this band as Other. According to Apple, System Data consists of things that, once uploaded to iCloud or otherwise removed by the device itself, cannot be retrieved with software, such as the voices and sounds for Siri, font files, dictionary files, non-removable logs and cached data by the system, the Spotlight index, and system data such as Keychain and the CloudKit database. In contrast to System Data is the designation of the System, which is the operating system of the user’s iPhone, as seen in the Storage area within the Settings application.
Can you shrink System Data storage on iPhone?
According to Apple’s website, there is no direct way for you to delete the system data on your device other than by using the tools provided by Apple, regardless of their functions. As mentioned in the help article previously referenced, Apple states that when there is sufficient available space on the user’s device, it will automatically remove cached and temporary files from the device, so that you can utilize this space. In addition, Apple states in this article that the iOS system is not able to delete cached files on its own. Therefore, there is no way for you to guarantee any specific steps outlined in this help article will reduce the size of the grey band in your Storage usage breakdown.
Apple has previously admitted that it could fail in some capacities when performing the aforementioned cleanup process, but as noted in the iOS 13.6.1 update notes, there was a fix to an error in iOS 13.6.1 for an issue in which unneeded system data files may not be deleted from the device automatically due to low storage. Although this was an error from the past, it does indicate that the automatic clean-up process can fail from time to time.
A similar issue as in iOS 26 is being reported online. On 08/10/2025, a user of an Apple community using an iPhone 16 Pro reported that the device was using approximately 52 GB of System Data, preventing the user from updating the device. A member of the community advised the user that a computer could be used to work around this limitation of iOS 26, but also recommended that using a Backup/Restore method is one way to recover some of this System Data. This advice is provided by a community member not an Apple support representative, as this option requires erasing the phone and restoring all of the backed-up data, so that it is the last option available.
The solution to this problem is not to pay for additional storage space for iCloud. From iCloud Drive on the iPhone device storage screen, Apple only lists iCloud content you’ve downloaded onto the phone, indicating that the amount of space you may need will require an increased subscription level to add your iCloud account, rather than increasing the storage space of your iPhone.
Other storage on Android
Similar to iPhone devices, Android devices display a similar storage classification based on the manufacturer. In the Samsung Community, for instance, one owner of a Galaxy S24 reported to have approximately 15.6 GB of “Other Files” and 5.85 GB of those files being of Unknown Origin. A response to that owner indicated that the Unknown files are App Cache files left behind by the applications the user has been using most, and each application would need to have its cache cleared individually. Again, this is an explanation provided by one user for a specific device and is not information provided by Samsung. While clearing the cache is a very low-risk option, it is important to note that clearing the entire Storage type (rather than only Cache type) would delete data associated with that application.
The Settings Map: Where to Find and Empty the Hidden Bins
Read the last column before you tap anything. Emptying a photo bin is final. Apple says an item deleted from Recently Deleted can’t be brought back, and Google says permanently deleted photos can’t be restored. Open each bin and scroll through it first, because it may contain something you deleted by mistake.
| Where the space hides | Device or app | Where to find it | What clearing it does |
|---|---|---|---|
| Recently Deleted | iPhone, Photos app | Photos › Collections › Recently Deleted (under Utilities) › View Album › Select › More › Delete All (Apple) | Permanent. With iCloud Photos, confirming “Delete from All Devices” removes it everywhere |
| Trash | Android, Google Photos | Collections › Trash › More › Empty Trash › Delete permanently (Google) | Permanent. Use the gallery app for copies on a memory card |
| Recycle bin | Samsung Galaxy, One UI 6 | My Files › Recycle bin › More › Empty, or Settings › Device care › Storage management › Recycle bin (Samsung) | Permanent. Covers Gallery, My Files and Voice Recorder together |
| Chat media | WhatsApp, Android | More › Settings › Storage and data › Manage storage, then sort by Largest (WhatsApp) | Permanent for you. Choose “Delete any copies” to remove duplicates |
| Media cache | Telegram | Settings › Data and Storage › Storage Usage › Clear cache (Telegram) | You stay logged in, and media re-downloads when opened |
| Playback cache | Spotify | Profile picture › Settings and privacy › Data-saving and offline › Clear cache (under Storage) (Spotify) | Clears cached streams. “Remove all downloads” is a separate option (Spotify) |
| App cache | Android, any app | Settings › Apps › choose app › Storage › Clear cache (Google) | Temporary data only. Avoid Clear storage, which deletes all app data |
| Per-app data | iPhone, any app | Settings › General › iPhone Storage › choose app (Apple) | Offload keeps documents and data. Delete removes both |
There are two sections in this table: The top three rows are photo bins that have already had an action taken to delete; however, these bins will have to go through an additional action again to finalise the deletion. Once an empty photo bin has been emptied and all items that were located in that bin have been removed from mobile storage, there is no way to restore them. The remaining five rows are app stores, and app stores have never included media, so emptying those is less risky than emptying a photo bin; although the table does include warnings related to Clear storage and permanent WhatsApp deletion.
The WhatsApp route shown is for Android because that is what is documented by WhatsApp. The iPhone route has a different layout than the Android layout. Google also explains that because Android settings can vary by phone and vary according to the manufacturer of the phone, for example, a Tecno, Infinix, or Xiaomi phone may all have slightly different wording for the same option. After each clean-up is performed, go to Settings > Storage, or alternatively, General > iPhone Storage to verify how much space has been reclaimed. By performing this verification, you will know which bins contained the space that was previously used.
If there is no longer any free space left on an iPhone and therefore cannot be updated, Apple suggests enabling Offload Unused Apps or connecting the iPhone to a computer to update through a computer. Per Apple, the iPhone needs to be backed up before carrying out an update.
Where Most People Go Wrong
The most common error made when dealing with records in a gallery, such as one created on an account, is to mistake the word “delete” as the end of a process. Until you empty the bin associated with the deleted item, that space will remain unavailable to you. Additionally, many users of the storage space, who subscribe to the highest tier of subscription (e.g. the most space available), do not actually have their items stored in the gallery. It is vital that you know which account (e.g. phone number or cloud account) you are viewing, and work your way down through each row of the settings map, checking the outcome as you progress through the rows. This method often provides you with an accurate view of the area of the gallery where space has been lost, and allows you to avoid clearing storage areas of software and other files that contain important information, such as chat messages or login credentials you wish to retain.
FAQ
Will clearing an app’s cache sign me out?
Upon Google removal of cache memory you’re deleting temporary files only. These files may delay opening applications until they’re retrieved from your device, as they were already saved on your device when the application first loaded it. Clear all storage has a dual effect of clearing temporary files and causing your account to sign out. The app may load more slowly next time.
Does buying more Google or iCloud storage fix a full phone?
Yes, however, the cloud plan only provides free storage on the company’s servers rather than directly providing free space on the user’s mobile device. Users of Google’s 15 GB account quota are provided with an account that allows them to upload files to their cloud from various applications such as, but not limited to, Gmail, Google Drive, and Google Photos. The cloud space storage for an account differs from the mobile device and is located under a separate settings option for viewing.
Why does WhatsApp report a different storage figure from my phone?
According to WhatsApp, the difference in the calculations is due to how it calculates storage compared with your phone’s system. Therefore, the difference in amounts between the two may not represent that anything is malfunctioning or concealed.
Can I get photos back after emptying the bin?
No, as mentioned above, deleted files from Recently Deleted on Apple cannot be recovered; nor can anything deleted from Google Photos after it has been designated permanently deleted, even using the Google Takeout function, which can’t be restored.
