If you are the owner of a smartphone on Android 11, you have probably encountered a notification about the availability of a “security patch”. Many users ignore these updates, considering them unimportant - and in vain. Security patches (or security patchess) fix critical vulnerabilities that could allow attackers to take control of your device, steal data, or install malware. In this article, we will take a detailed look at what security patches for Android 11are, how they work, why they need to be installed, and what to do if the update does not arrive automatically.

The peculiarity of Android 11 (code name Red Velvet Cake) is that Google has introduced more stringent security requirements for manufacturers devices. Now patches are released monthly, and their absence can deprive the smartphone of support for key functions - for example, access to Google Play Protect or banking applications. However, not all users understand how monthly patches differ from major Android version updates (for example, from 11 to 12). We'll explain the difference and show you how to check that your device's security is up to date.

What is a security patch and why do you need it?

A security patch is a small software update that corrects detected vulnerabilities in the operating system. Unlike major updates (for example, the transition from Android 10 to Android 11), patches do not add new functions, but are focused exclusively on protect user data. They close the “holes” through which hackers could:

  • 🔓 Gain root access to the device without your knowledge;
  • 📱 Install spyware to spy on your actions;
  • 💳 Intercept bank card data or passwords;
  • 📡 Connect to your smartphone through vulnerabilities in Wi-Fi or Bluetooth.

Google publishes information about closed vulnerabilities in monthly security bulletins. For example, the patch for June 2023 fixed 47 critical vulnerabilities, including problems in the Linux kernel, media codecs and components. Qualcomm. Without these patches, your smartphone remains vulnerable to attacks, even if you use an antivirus.

💡

Security patches are especially important for devices with root access or an unlocked bootloader - such smartphones are 3 times more likely to become a target for hackers.

How security patches differ from Android version updates

Many users confuse security patches with OS version updates (for example, from Android 11 to Android 12). The difference is fundamental:

Characteristic Security patch Updating the Android version
Purpose Fixing vulnerabilities Adding new features and changing the interface
Output frequency Monthly (sometimes every 2 months) 1 time a year (less often - 2 times)
File size From 10 to 100 MB From 500 MB to 2 GB
Device requirements Minimum (supported even on weak smartphones) High (old devices often do not receive updates)
Impact on performance Invisible to the user May slow down work on weak devices

Important: some manufacturers (for example, Samsung or Xiaomi) combine security patches with updates to the proprietary shell (One UI, MIUI). In this case, the file size can reach 300–500 MB, but the essence remains the same - the main goal of such updates is to close vulnerabilities.

Another key difference: security patches required to support Google services. For example, without current fixes:

  • 🏦 Banking applications (SberBank, Tinkoff) can block access;
  • 🔒 Google Play Protect will stop scanning the device for viruses;
  • 📱 Some games (for example, Genshin Impact or PUBG Mobile) will refuse to start.
📊 How often do you install security patches?
Always immediately after release
Only if problems appear
I never update
I don’t know what it is

How to check the current version of the security patch on Android 11

To find out which security patch is installed on your device, follow these steps:

  1. Open Settings;
  2. Go to section About phone (or About tablet);
  3. Find item Android version or Security update;
  4. Look at the date in the format YYYY-MM-DD (for example, 2023-11-05 - patch dated November 5, 2023).

If the date patch is older than 2-3 months, your device is vulnerable. For example, if now April 2026, and you have a patch from January 2026, this means that over the past months new vulnerabilities may have appeared that are not fixed on your smartphone.

☑️ Checking the relevance of the patch

Done: 0 / 4

On some devices (for example, Samsung Galaxy or Xiaomi Redmi) the path may differ:

  • 📱 Samsung: Settings → Device maintenance → Software update;
  • 📱 Xiaomi: Settings → About phone → System update;
  • 📱 Google Pixel: Settings → System → Advanced → System update.
What to do if the "Security update" section is missing?

On some budget smartphones (for example, from Tecno or Infinix), manufacturers hide this information. In this case, check the patch version through the app CPU-Z (section "System → Security Patch") or use the ADB command: 

adb shell getprop ro.build.version.security_patch

How to install a security patch on Android 11: step-by-step guide

Updating the security patch usually occurs automatically, but if the notification does not arrive, you can run the scan manually. The instructions are universal for most devices:

  1. Connect to stable Wi-Fi network (updating via mobile data may lead to additional expenses);
  2. The battery charge should be at least 50% (or connect a charger);
  3. Open Settings → System → System update (the path may differ depending on the manufacturer);
  4. Click Check for updates;
  5. If an update is available, click Download and install;
  6. After downloading, the device will reboot and install the patch.

On devices Samsung the process may look different:

  1. Go to Settings → Device maintenance → Software update;
  2. Click Download and install;
  3. Confirm the action and wait for the reboot.
💡

If the update does not install the first time, try clearing the cache of the "Software Update" application in settings or reboot the device.

If the security patch does not arrive automatically, the following reasons are possible:

  • 🚫 The manufacturer has stopped supporting your model (relevant for devices older than 2-3 years);
  • 📵 Automatic updates are disabled on the device;
  • 🔄 Manufacturer's servers are temporarily unavailable (try again later).
⚠️ Attention: Some manufacturers (for example, Huawei or Honorafter the 2019 sanctions release security patches with a delay or stop supporting them altogether. Check the update policy for your model on the official website. brand.

What to do if the security patch is not installed

If your device does not receive security patches, try the following solutions to the problem:

1. Checking automatic update settings

Make sure that automatic updates is enabled:

  • 🔄 Settings → System → Advanced → System update → Settings (⚙️) → Automatically download updates;
  • 📶 Select option Only via Wi-Fi (to avoid wasting mobile traffic).

2. Manual installation via Recovery Mode

If the update does not arrive over the air (OTA), you can install it manually via Recovery Mode:

  1. Download the official firmware with a security patch from the manufacturer's website (for example, SamMobile for Samsung or Xiaomi Firmware Updater);
  2. Place the file in the root folder of the internal memory;
  3. Turn off the device and hold down the combination of buttons to enter Recovery (usually Power + Volume Up);
  4. Select item Apply update from SD card (or similar);
  5. Specify the downloaded file and confirm installation.
⚠️ Attention: Installing the firmware manually may result in resetting the settings or losing data. Make a backup copy first via Settings → System → Backup or use Titanium Backup (root access required).

3. Using a PC and official utilities

For devices Samsung, Xiaomi or Oppo you can use proprietary apps:

  • 🖥️ Samsung Smart Switch;
  • 🖥️ Xiaomi Mi Flash Tool;
  • 🖥️ Oppo PC Suite.

Connect your smartphone to the computer, run the utility and follow the instructions on the screen. The app will automatically find and install the latest patches.

Android 11 models that no longer receive patches. security

Manufacturers are required to support devices with security patches for minimum 2 years from the date of release (according to Google's requirements). However, in practice, many brands stop updating earlier. Here is a list of popular models on Android 11, which no longer receive security patches (as of 2026):

Manufacturer Model Last security patch Reason for discontinuation of support
Samsung Galaxy S10 / S10+ / S10e 2023-10-01 4 years of support (from release in 2019)
Xiaomi Redmi Note 9 Pro 2023-12-05 3 years of support (release in 2020)
Google Pixel 4 / 4 XL 2023-11-06 3 years of updates (from release)
OnePlus OnePlus 8 / 8 Pro 2023-09-01 2 years of major updates + 1 year of patches
Huawei P40 Pro (without Google services) 2022-05-01 Sanctions and lack of Google license

If your device is on this list, consider the following options:

  • 🔄 Install custom firmware (for example, LineageOS), which supports current patches;
  • 🛡️ Use third-party security solutions (for example, NetGuard to block network attacks);
  • 📱 Consider buying a new smartphone - outdated devices become easy targets for hackers.
⚠️ Attention: Installing custom firmware requires unlocking the bootloader and may void your warranty. In addition, some banking applications (for example, SberBank Online) block access on devices with an unlocked bootloader.

FAQ: Frequently asked questions about Android 11 security patches

❓ Why are security patches released every month? Isn't it possible to release one big update a year?

Google and manufacturers release monthly patches because vulnerabilities are constantly being discovered. If you wait for years, hackers will have time to take advantage of security holes. For example, in 2023, a critical vulnerability was found that allows you to gain root access via Bluetooth. The patch for it was released next month. CVE-2023-21085, which allows you to gain root access via Bluetooth. The patch for it came out next month.

❓ Is it possible to roll back a security patch if after it the smartphone began to slow down?

Technically, a rollback. possible, but highly not recommended. To do this you need:

  1. Find firmware with the previous patch;
  2. Install it via Fastboot or Recovery;
  3. Do a reset to factory settings.

However, after a rollback you will lose all data, and the device will remain vulnerable. It is better to try resetting the cache (Recovery → Wipe Cache Partition) or wait for the next patch - manufacturers often fix bugs in the next update.

❓ Why on my smartphone security patches are released less than once a month?

It depends on the manufacturer's policy. For example:

  • Google Pixel they receive patches on the day of release (monthly);
  • Samsung and Xiaomi sometimes they combine patches for 2 months;
  • Budget brands (for example Tecno or Infinix) can be updated once a quarter.

Check the update schedule for your model on the official website.

❓ Which is more dangerous: not installing security patches or not update to a new version of Android?

Uninstalled security patches are more dangerous. A new version of Android (for example, the transition from 11 to 12) adds functions, but does not always close critical vulnerabilities. Patches correct holes through which you can steal data or infect the device with a virus. For example, a vulnerability Dirty Pipe (2022) allowed you to change system files without root access - and only a security patch. closed.

❓ How to check if known vulnerabilities are closed on my device?

Use security analysis applications:

  • Google Play Protect (built into Google services);
  • Security Patch Checker (shows the relevance of patches);
  • Qualys SSL Labs (checks encryption vulnerabilities).

You can also manually check the patch version with the latest bulletins on the website Android Security Bulletin.