Knowing how to free up space on your mobile phone has become a practical necessity for anyone using a smartphone daily. Notifications about full storage, slow app launches, and inability to install updates are clear signs that your device needs a strategic cleanup. In this guide, we present six methods that truly work, differentiating between internal storage and RAM, and prioritizing native Android and iOS resources for immediate results.
Understand the Difference: Storage vs RAM
Firstly, it’s crucial to understand that storage and RAM are distinct components with completely different functions. Internal storage — measured in gigabytes (GB) — acts as the phone’s “closet,” where installed apps, photos, videos, documents, and the operating system itself are stored. Therefore, when the system alerts that space is full, it refers to this component.
On the other hand, RAM is responsible for keeping apps open and processes active in real-time. Thus, when the phone is slow to switch between apps, the issue is usually with RAM, not storage. However, full storage can also affect overall performance, as the operating system needs free space to create temporary files and manage updates.
Consequently, the strategy to solve each problem is different. Freeing up storage involves deleting files and apps, while optimizing RAM requires closing background processes and periodically restarting the device. In this article, the main focus is on internal storage, which is the source of most user complaints.
Check How Much Space You Really Have
Before deleting any files, it’s advisable to check exactly what’s consuming your device’s storage. Both Android and iOS offer detailed native tools for this diagnosis.
Step-by-step on Android
On Android, simply go to Settings > Storage. Indeed, starting from Android 12, the system presents a categorized graph showing how much space is occupied by apps, images, videos, audio, and system files. Additionally, the “Free up space” button directs you to the file manager, which automatically suggests items for deletion, such as old downloads, duplicate apps, and large files not accessed for over 90 days.
Step-by-step on iPhone
On iPhone, the path is Settings > General > iPhone Storage. On this screen, iOS displays a colored bar with space distribution and lists all installed apps in descending order of consumption. Just like on Android, the system offers automatic recommendations, such as emptying the deleted photos trash or reviewing large attachments in iMessage conversations. Thus, this initial diagnostic step allows informed decisions on what to delete.
6 Practical Methods to Free Up Space
The following table summarizes the six methods, the average recoverable space, and the effort level involved in each:
| Method | Average Recoverable Space | Platform | Effort Level |
|---|---|---|---|
| Delete unused apps | 2 – 8 GB | Android and iOS | Low |
| Save photos and videos to the cloud | 5 – 30 GB | Android and iOS | Medium |
| Clear browser and social media cache | 1 – 5 GB | Android and iOS | Low |
| Organize WhatsApp | 3 – 15 GB | Android and iOS | Medium |
| Automatically archive apps | 1 – 4 GB | Android and iOS | Low |
| Enable smart storage | 5 – 20 GB | Android 14+ | Low
1. Delete Unused AppsGoogle’s own studies indicate that the average user installs about 80 apps but regularly uses only 30. Thus, dozens of apps remain installed, occupying space without any practical purpose. On Android, you can access Settings > Apps and sort by last use. On iPhone, the storage screen already shows the last access date for each app. Additionally, some games can individually occupy more than 2 GB. Therefore, removing two or three abandoned games already results in a significant storage gain. The recommendation is to review the list of installed apps at least once a month. 2. Save Photos and Videos to the CloudPhotos and videos are often the biggest storage culprits. A one-minute 4K video takes up about 400 MB, and a typical user’s gallery can easily exceed 20 GB. First, it’s essential to enable automatic backup in a reliable cloud service. Google Photos offers 15 GB free, shared with Gmail and Google Drive, with paid plans starting at 100 GB for $9.99/month. In the Apple ecosystem, iCloud provides 5 GB free and plans starting at 50 GB for $3.50/month. After confirming the backup is complete, the user can delete the media from the local device. However, it’s crucial to verify the backup status before deleting any files. Before starting this process, we recommend consulting our guide on how to back up your phone on Android and iPhone to ensure no files are lost. 3. Clear Browser and Social Media CacheThe cache is a set of temporary data that apps store to load content faster. However, over months, this cache can grow disproportionately. Instagram, for example, accumulates between 500 MB and 2 GB of cache in a few months of use. Chrome and Safari show similar behavior. Indeed, clearing the cache only removes temporary data and does not affect personal data, saved passwords, or app conversations. On Android, the process takes place in Settings > Apps > [App Name] > Storage > Clear Cache. On iPhone, most apps require uninstallation and reinstallation to clear the cache, except for Safari, which allows direct cleaning in Settings > Safari > Clear History and Data. 4. Organize WhatsAppWhatsApp can consume up to 15 GB of storage by accumulating messages, photos, videos, and audio over months. Thus, periodic cleaning is essential. The app itself offers a native tool accessible in Settings > Storage and Data > Manage Storage. In this section, the app lists files larger than 5 MB and allows deletion by conversation. Additionally, disabling automatic media download is an effective preventive measure. Simply go to Settings > Storage and Data and select “No media” for automatic downloads over Wi-Fi and mobile data. Consequently, the user only downloads files they truly want to view, avoiding unnecessary accumulation. 5. Automatically Archive AppsBoth Android and iOS offer features to automatically archive infrequently used apps. On Android, archived apps retain personal data while removing the app itself, allowing redownload later without data loss. The feature can be enabled in Google Play Store > Settings > General > Automatically Archive Apps. On iPhone, the equivalent function is called “Offload Unused Apps” and is available in Settings > App Store. Similarly, the system removes the app but preserves the icon on the home screen with a small cloud indicator. Tapping the icon restarts the download automatically with all previous settings intact. 6. Enable Smart StorageAndroid 14 and later versions have the “Smart Storage” feature, which automatically deletes photos and videos already backed up when space becomes critical. Thus, the system proactively manages storage without requiring manual user intervention. The feature can be enabled in Settings > Storage > Smart Storage. However, it’s important to note that this function depends on an active backup service, such as Google Photos. Therefore, before enabling it, the user must confirm that automatic backup is working correctly. In the Apple ecosystem, the “Optimize iPhone Storage” feature in Settings > Photos offers similar behavior, replacing original media with lower resolution versions and keeping the full files in iCloud. To keep your phone organized in the long term, combining these techniques with productivity apps that manage files and routines can make a significant difference in daily experience. When to Consider a Factory ResetIn some cases, the six previous methods are not enough to resolve chronic storage or performance issues. In this context, a factory reset emerges as a last resort. This procedure erases all data from the device and restores the system to its original factory state. Before performing the reset, three steps are mandatory:
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