The problem of lack of free space in a smartphone becomes relevant for most users within a year or two after purchasing the device. The system begins to slow down, new applications are not installed, and notifications about full storage appear with alarming regularity. In such a situation, many are looking for a way to change the internal memory on Android, mistakenly believing that this parameter can be increased programmatically, like the amount of RAM.
In fact, the physical volume of the built-in storage hard-wired at the hardware level and cannot be changed without soldering chips. However, there are effective software methods that can dramatically increase the usable space available for your data. We will look at all legal and safe optimization methods, from basic cleaning of system garbage to advanced methods for adapting external media.
Understanding the architecture of the file system Android will help you distribute data wisely. The internal storage is divided into a system partition, which is inaccessible to the user, and a user partition, where photos, videos and applications are stored. Our task is to free up the user area as much as possible, using built-in tools and third-party utilities.
Analysis of occupancy and search for hidden files
Before taking radical measures, it is necessary to conduct a thorough audit of what exactly is taking up precious gigabytes. Standard phone settings often show only the overall picture, hiding details. For in-depth analysis, it is recommended to use specialized file managers or a built-in storage analyzer, which visually displays the distribution of space.
Pay attention to the folder Android/obb i Android/data. This is where cache files of heavy games and messenger media data are stored. Over time, these directories can grow to tens of gigabytes, even if the application itself is small. Deleting the contents of these folders is safe for the system, but may require re-downloading resources in games the next time you start them.
Users often forget about downloaded files from browsers and attachments in mail. Check the directory Download and messenger folders like Telegram or WhatsApp, where all viewed media files are automatically saved. Cleaning these archives can instantly free up 2 to 10 GB of free space without losing important data.
⚠️ Attention: Before deleting files from system folders, make sure that these are not work documents or saved game progress that are not synchronized with the cloud.
Transferring applications to a memory card (Adoptable Storage)
One of the most effective ways to change the logic of working with memory is the Adoptable Storage function, implemented in Android 6.0 and higher. This technology allows the microSD card to be formatted as part of the internal storage, making it indistinguishable to the system from the built-in memory chip. After this procedure, applications and their data will be installed on the card by default.
To activate this function, insert a high-quality memory card with a speed class of at least U3. Then go to menu Settings → Storage. Select your card and click the menu (three dots) where there will be an option to “Set up as internal storage”. The system will warn you about the loss of all data on the card and the need to format it.
After the process is completed, the system will encrypt the card, and it will only work in this specific smartphone. Taking it out and inserting it into another computer or phone without formatting will not work. This ensures data security, but requires the use of reliable memory cards, since their failure will lead to the loss of installed applications.
☑️ Preparing to format the card
Not all smartphone manufacturers include this function in their shells. For example, devices from Samsung or Xiaomi can hide this option, leaving the ability to use the card only as portable storage. In such cases, you can transfer only some of the applications that support this function manually through the settings of each specific software.
Clearing the cache and data of system applications
System applications, such as Google Play Services, YouTube or the Chrome browser, tend to accumulate a huge amount of temporary files. This cache speeds up apps, but over time it becomes redundant and takes up space as dead weight. Clearing the cache does not delete your personal settings or accounts, but returns megabytes of free space.
Go to Settings → Applications and select the most resource-intensive apps. Inside each application's menu, find the "Storage" section. Here you will see two buttons: “Clear cache” and “Erase data”. Use the first option regularly to keep your system clean. The second option will reset the application to its original installation state.
Pay special attention to the gallery and media scanner. Sometimes the thumbnail files (.thumbnails) in the DCIM folder can take up several gigabytes. Deleting this folder will force the system to recreate the thumbnails again, which will temporarily load the processor, but will free up a significant amount of disk space.
Use the Unlimited mode in Google Photos with quality compression to automatically free up space in your phone memory after uploading photos to the cloud.
Using cloud storage as a memory expansion
If physical expansion impossible, the logical solution is to transfer media files to the cloud. Services like Google Drive, Yandex.Disk or Dropbox allow you to store terabytes of data without taking up a single byte in the internal memory of your smartphone. This changes the paradigm of using the device: the phone becomes a terminal for accessing data, and not their main storage.
Set up automatic uploading of photos and videos immediately after shooting. Most modern galleries have a built-in syncing feature. After successful upload to the cloud, you can use the “Free up space” function, which will delete local copies of files, leaving them only on the Internet.
To work with documents and heavy files, use the “Offline Access” function only for those files that are needed right now. The remaining files will be downloaded as needed, provided there is a network connection. This allows you to effectively manage the limited resource of the built-in storage.
| Service | Free volume | Features | Integration with Android |
|---|---|---|---|
| Google Drive | 15 GB | Shared space with Mail and Photo | Built into the system |
| Yandex.Disk | 10 GB | Automatic download photo | Separate application |
| Mega | 20 GB | High level of encryption | Separate application |
| Dropbox | 2 GB | Reliable synchronization | Separate application |
Resetting factory settings as a radical method
When software cleaning does not produce results, and the system is unstable due to data fragmentation or errors in the registry, a full reset helps. This procedure returns the phone to the state it was in when purchased, completely erasing the user partition of the internal memory.
Before performing this operation, it is critical to create a complete backup of your contacts, messages, and important files. The reset is irreversible, and it will be impossible to recover deleted data without a backup. Go to Settings → System → Reset settings and select “Delete all data.”
After rebooting, you will get a clean system with the maximum available memory. This is also a great way to get rid of hidden viruses or system junk that cannot be removed by standard cleaning tools. However, this method requires time to re-set up the phone and install applications.
⚠️ Attention: Make sure you remember the password for your Google account. After the reset, the system will require you to enter it to confirm ownership of the device (FRP protection).
What to do if the phone does not turn on after the reset?
If after resetting the settings the device is stuck on the logo, try entering Recovery mode (usually by holding down the power button and volume up) and perform wipe cache partition. If this does not help, you may need to flash the device via a computer.
Advanced methods for advanced users (root access)
For users who are willing to take risks and gain superuser rights (Root), opportunities open up to change the structure of memory partitions. Using special scripts and utilities like Link2SD you can forcefully transfer any system applications to a memory card by creating symbolic links.
This method allows you to bypass the restrictions imposed by the manufacturer on transferring applications. You can create a second partition on the memory card in the file system ext4 and assign it as an extension of internal memory at the system kernel level. This requires in-depth knowledge and may void your warranty.
Using ADB commands also allows you to remove system applications (bloatware) that take up space but are not used by the user. The command pm uninstall -k --user 0 allows you to hide system software without completely uninstalling it, which saves space and processor resources.
adb shell pm list packages -s
adb shell pm uninstall -k --user 0 com.android.bloatware
⚠️ Attention: Obtaining root access and modifying system partitions can lead to “bricking” devices. Proceed only if you understand the risks and have experience working with ADB.
root access give full control over memory, but void the warranty and increase the system's vulnerability to viruses. Use this method only as a last resort.
It is important to understand that the interfaces and names of menu items may differ depending on the version Android and the manufacturer's shell (MIUI, OneUI, ColorOS). If you do not find the described options, check the official documentation for your specific smartphone model, since the logic of the settings may change.
Frequently asked questions (FAQ)
Is it possible to increase the phone’s built-in memory programmatically without a memory card?
It is not possible to physically increase the memory. Programmatically, you can only free up space by deleting unnecessary files, cache, or transferring data to the cloud. Applications in the Play Market claiming to “increase memory” are usually a marketing ploy to clear the cache.
Why is space not freed up after deleting applications?
There may be cache files or data left in the folder Android/data. Also check the trash in the gallery or file manager - deleted files are often stored there for another 30 days before being permanently deleted.
Is it safe to format a memory card as internal memory?
It is safe for the data if the card is working properly. However, the speed of the card is usually slower than the built-in memory, which can slow down the launch of applications. Also, the card will be encrypted and cannot be read on other devices.
How to transfer WhatsApp to a memory card?
In the settings of WhatsApp itself, go to “Data and storage” → “Media file storage path” and select the SD card. This will only transfer photos and videos, but not the application itself and the message database.
What is a swap file on Android and is it needed?
The swap file uses part of the internal memory as an addition to RAM. On modern devices with fast storage, this can help multitasking, but creates an extra load on the recording resource of the built-in drive.