Android 11: how much space does it take up on the phone and how to free it up

Updating to Android 11 is an important step to improve the performance and security of your smartphone. But many users are faced with a problem: after installing a new version of the OS, the free space on the device mysteriously decreases. How long does it actually take Android 11, and why can the numbers differ on different phones? The answer depends on the manufacturer, model, and even the update method.

In this article we will look at how exactly Android 11 allocates memory on the device, which files take up the most space, and what can be done to free up additional gigabytes. You will also learn how to check the exact volume of the system on your smartphone and avoid common mistakes when cleaning.

How much does Android 11 weigh on different smartphones

The basic size Android 11 without taking into account the manufacturer's firmware and pre-installed applications is about 1.5–2.5 GB. However, in reality, the figure can reach 5–12 GB - it all depends on the brand and model. For example, Samsung and Xiaomi add their own shells (One UI and MIUI), which increase the volume of the system.

Below is a table with approximate data for popular brands. Please note that the values may vary depending on the specific model and firmware region:

⚠️ Attention: If your smartphone was updated over the air (OTA), the system may temporarily take up more space due to duplicate firmware files. After successful installation, unnecessary data is usually deleted automatically, but sometimes it is required manually clearing the cache.

Why Android 11 takes longer space than expected

Many users are surprised to see that after the update the free space was reduced by 10–15 GB instead of the promised 2–3 GB. The reasons lie in several factors:

• 📦 Manufacturer firmware: Shells like One UI or MIUI add their own applications, themes and services that take up additional gigabytes.
• 🔄 Update files: When OTA updating, the system saves backup copies of old versions in case of a rollback. They can weigh up to 3–5 GB.
• 🗑️ Cache and temporary files: After installation, new data is cached, and old data is not always deleted automatically.
• 📱 Memory division: On some devices, part of the memory is reserved for system needs and is not displayed as “free”.

For example, on Samsung Galaxy after updating to Android 11 a folder /data/ota_packagemay appear, occupying several gigabytes. It can be deleted manually, but only after confirming the successful installation of the new version.

How to check how much space Android 11 takes up on your phone

To find out exactly how much memory the system uses, follow these steps:

1. Open Settings → Memory (the path may differ on some devices, for example, Settings → Device care → Memory).
2. Click on the section "System" or "Android OS" —the volume occupied by firmware.
3. For detailed analysis, use applications like DiskUsage or Files by Googlethat show the distribution of memory by folders.

On smartphones Samsung the path may look like this: Settings → Device maintenance → Memory → More details → System memory. On Xiaomi — Settings → About phone → Memory.

adb shell df -h /system

How to free up space after updating to Android 11

If after installation Android 11 there is critically little free space, use these methods:

Delete application cache in Settings → Applications

Empty folder Download of unnecessary files

Transfer photos and videos to the cloud or PC

Delete unused applications

Check folder /data/ota_package for old update files-->

• 🧹 Clear cache: Go to Settings → Applications, select any application and press "Clear cache"For mass cleaning. use Settings → Memory → Cached data.
• 📁 Removing duplicates: Applications like Files by Google or CCleaner will help you find duplicate files (photos, videos, documents).
• 🔄 Reset to factory settings: An extreme method, but effective Before resetting, make a backup copy of your data via Settings → System → Backup.
• 🖥️ Transfer to SD card: If your smartphone supports memory cards, transfer multimedia and some applications to them (not all apps support this function).

⚠️ Attention: Do not delete folders named system, vendor or boot manually - this may lead to device malfunctionFor deep cleaning, use only official tools or ADB.

What to do if Android 11 "eats" too much memory

If after all the manipulations the system still takes up a disproportionate amount of space, the following reasons are possible:

1. Update error: The firmware could install incorrectly, leaving junk files. In this case, flashing via Odin (for Samsung) or Fastboot (for Google Pixel).
2. Virus software: Some malicious apps are disguised as system ones will help. files. Check the device via Malwarebytes or Dr.Web.
3. Incompatibility with device: On older or unofficially supported models Android 11 may work unstably. Check the list of officially supported devices on the manufacturer's website.

For diagnostics, use the ADB command, which will show detailed memory allocation:

adb shell df -h

If the partition /data is full, this may indicate an accumulation of logs or temporary files. In this case, resetting to factory settings will help.

Comparison of Android 11 with other versions by volume

To understand how "gluttonous" it is, let's compare it with other versions: Android 11 "gluttonous", let's compare it with other versions:

As can be seen from tables Android 11 slightly heavier Android 10, but easier Android 12/13. However, the difference becomes noticeable only on devices with manufacturers' shells.

Frequent errors when clearing memory after an update

Trying to free up space, users often take actions that only aggravate the problem. Here are the most common errors:

• 🚫 Deleting files from /system without root: This can lead to "briku" (complete inoperability) of the device. System files are protected from changes.
• 🔧 Using "cleaners" with aggressive settings: Applications like Clean Master can delete important data, for example, cache Google Play Services, which will cause service failures.
• 🔄 Interrupting the update process: If during installation Android 11 the battery runs out or the user forcibly reboots the device, this may lead to data loss or damage to the firmware.
• 📱 Ignoring backups: Always save important data before resetting or manually wiping. It is almost impossible to recover deleted files after formatting.

⚠️ Attention: If you use custom firmware (for example, LineageOS), the volume Android 11 may differ from the official versions. In addition, some modifications are not optimized to save memory, which leads to its rapid filling.

FAQ: Frequently asked questions about the size of Android 11