Owners Samsung Galaxy A51 have been waiting for several years for an official update to Android 12 - one of the most significant versions of the operating system from Google. Despite the fact that the model was released, many users still have not received the promised update to the twelfth version. In this article we will figure out when to expect the release of January 2020 with Android 10 on board, many users still have not received the promised update to the twelfth version. In this article we will figure out when to expect the release One UI 4.0 (Samsung shell based on Android 12) for Galaxy A51how to check the availability of the firmware and what to do if the update is delayed.

It’s worth it right away to clarify: Samsung officially confirmed that Galaxy A51 will only receive one major OS update - from Android 10 to Android 11 (One UI 3.1). However, there are still rumors circulating online about the possible release of Android 12 for this model. Let's take a look at how justified they are, and what alternative ways to update a smartphone exist.

Samsung's official policy: why Android 12 may not be released for the A51

The company Samsung adheres to a clear update policy for its devices. According to it, budget and mid-budget smartphones (which include Galaxy A51) receive:

  • 📅 2 years of major OS updates (for example, from Android 10 to Android 12)
  • 🛡️ 4 years of patch security (monthly or quarterly)

For Galaxy A51 this means:

  • ✅ Android 10 —out of the box (2020)
  • ✅ Android 11 (One UI 3.1)—received in 2021
  • ❌ Android 12 — not guaranteed official

However, there are nuances. For example, Samsung Galaxy A50 (2019 model) received Android 11, although initially only Android 10 was promised. This gives hope that A51 can still be updated to One UI 4.0. However, there are no official statements from the manufacturer on this matter.

⚠️ Attention: If you see news online about the release of Android 12 for Galaxy A51, check the source. Often such publications are based on leaks or unofficial firmware that may contain errors.
📊 Have you already updated your Samsung Galaxy A51 to Android 11?
Yes, a long time ago
Yes, recently
No, still on Android 10
I don’t know what version I have
I have a different model

Unofficial ways to install Android 12 on Galaxy A51

If Samsung does not release an official update, there are alternative options. They can be divided into two categories:

  1. Custom firmware (for example, LineageOS, Pixel Experience). They allow you to install pure Android 12, but require unlocking the bootloader and loss of warranty.
  2. Ported firmware from other models Samsung (for example, from Galaxy A52). This method is risky - there may be bugs with the camera, sensors or communication.

Before trying unofficial methods, please note:

  • 🔓 Unlocking the bootloader will reset all data (Factory Reset).
  • 🛠️ There may be problems with Samsung Pay, Knox and banking applications.
  • 📱 Some functions (for example, Always On Display) may not work correctly.
What is Knox and why can’t it be restored?

Knox is a hardware security module in Samsung smartphones. When the bootloader is unlocked, it is permanently damaged, which leads to the loss of Samsung Pay, Secure Folder and some corporate applications.

If you decide to use custom firmware, follow the instructions:

Be sure to back up your data|Charge your phone at least 70%|Download the firmware and TWRP for your model|Install Samsung drivers on your PC|Unlock OEM Unlock in the developer settings-->

How to check the availability of the Android 12 update on A51

If Samsung suddenly releases an update, you can check its availability manually. this:

  1. Open Settings → Software update.
  2. Click Download and install.
  3. If an update is available, follow the instructions on the screen.

If the button is inactive or says “No update”, try:

  • 🔄 Restart the phone and check again.
  • 🌍 Change region (for example, via VPN or changing the SIM card. Sometimes updates are released first in some countries.
  • 📶 Connect to Wi-Fi — major updates are not downloaded via the mobile data.
💡

If the update does not arrive for a long time, try clearing the cache of the "Software Update" application in the settings. This sometimes helps eliminate the check freeze.

You can also use a proprietary utility Samsung Smart Switch on PC:

  1. Download and install Smart Switch.
  2. Connect your phone via USB (in file transfer mode).
  3. Click Update in the app.

What's new in Android 12 (One UI 4.0) for Samsung

If the update does come out, owners Galaxy A51 will be able to appreciate the key innovations:

Function Description
Material You Adaptive design with automatic selection of color palette for wallpaper.
Improved privacy Microphone/camera access indicators, privacy panel in settings.
One by hand Improved management of large screens (interface shift down).
Widgets Redesigned widgets with dynamic content (weather, calendar).
Quick settings Google Pay and Home Controls are now in the notification shade.

Unfortunately, some functions (for example Game Booster+ or DeX) may not be available on Galaxy A51 due to hardware limitations.

💡

Even if the update is released, some features of One UI 4.0 may be limited on the Galaxy A51 due to the Exynos 9611 chipset and 4GB of RAM.

Common problems after the update and how to solve them

If you managed to update to Android 12 (officially or through custom firmware), you may encounter typical bugs:

  • 🔋 Rapid battery drain — try calibrating the battery (discharge to 0%, then charge to 100% without interruptions).
  • 📶 Network problems — reset the network settings in Settings → General management → Reset → Reset network settings.
  • 🎵 Sound distortion — check settings Dolby Atmos or disable it.
  • 🔄 Interface freezing — clear the cache in Settings → Device care → Memory → Clear cache.

If after the update the phone starts to get very hot or turns off, the firmware may be installed incorrectly. In this case:

  1. Make a backup copy of your data.
  2. Reset to factory settings (Settings → General management → Reset → Data reset).
  3. If the problem persists, reflash the phone via Odin (official Samsung utility).
⚠️ Attention: If you installed custom firmware and encountered critical errors (for example, the camera does not work or SIM card), return to the official software. Some bugs cannot be fixed without the original firmware.

Alternatives: what to do if Android 12 does not come out

If Samsung finally refuses to release Android 12 for Galaxy A51You have several options:

  • 📱 Buy a new smartphone —for example, Galaxy A52 or Galaxy A53which will receive updates to Android 15.
  • 🔧 Optimize the current system —disable unnecessary services, use light launchers (for example, Nova Launcher).
  • 🛡️ Install security patches - even without Android 12 Samsung releases monthly security updates.
  • 📲 Use alternative firmware - but remember the risks (see section above).

If you choose a new phone, pay attention to models with guaranteed support:

Model Guaranteed OS updates Years of security support
Galaxy A52 Android 13 2026
Galaxy A53 Android 15 2026
Galaxy A33 Android 14 2026
Is it possible to manually install Android 12 on Galaxy A51 via Odin?

No, unless Samsung the official firmware has not been released for your model. Odin works only with branded files from the manufacturer. Trying to flash firmware from another model (for example Galaxy A52) will lead to brick (breaking) the phone.

Will the Galaxy A51 receive security updates after abandoning Android 12?

Yes, Samsung promises to provide monthly or quarterly security patches within 4 years from the device release date. For Galaxy A51 (2020) this means support up to 2026.

How do I know what version of Android is installed on my Galaxy A51?

Go in Settings → Phone information → Android version. It will indicate, for example, Android 11 (API level 30) or Android 10 (API level 29).

Is it possible to roll back from Android 11 back on Android 10 if the update doesn't work well?

Technically yes, but this is a complex process that requires the use of Odin and the official Android 10 firmware. In addition, a rollback can lead to problems with Knox and data loss. We recommend that you first try resetting the settings (Factory Reset).

Are there ways to speed up the release of the update for my region?

No, but you can try:

  • Use a VPN connected to a country where the update has already been released (for example, Germany or South Korea).
  • Manually check for updates via Smart Switch on PC.
  • Participate in beta testing (if Samsung it starts).

However, these methods do not guarantee success.