How to fix Samsung Galaxy A51 stuck in Bootloop

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Alejandra Rangel
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If you've locked your Samsung Galaxy A51 and it's stuck in a boot loop, you've come to the right place. Follow this article to find out how to unlock your phone. When a phone is locked, it usually cannot get past the Samsung boot animation logo. This is called the boot loop, which means the phone cannot load the operating system firmware. 

Most of the time users fail to follow the online tutorials properly and as a result they end up installing incompatible software, which locks the phone, in this case, the Galaxy A51. If for some reason your Samsung Galaxy A51 is also stuck in a boot loop and refuses to boot beyond the Samsung logo, it means it is soft bricked. There are many reasons for this.

  • How to enter recovery mode or recovery mode on Samsung Galaxy A51

Why is your Galaxy A51 frozen?

1. Installing the wrong firmware: each firmware available online is created and designed for a specific phone model. The problem with Samsung is that it creates multiple variations of the same phone. For example, a phone in one country has Samsung's Exynos chipset, while the same version of the phone might have the Snapdragon chipset in another country. Consequently, it is always recommended to check the firmware model number carefully before flashing anything. If you flash a firmware designed for another phone model, the phone will hang in a boot loop.

2. Install the wrong custom ROM and kernel: the same thing goes for other files you might install on your phone. If you download and install a custom ROM, kernel, or any other file not designed for your phone, your phone will crash.

3. Unable to clear data and cache: some tutorials and procedures require the user to wipe data and perform a factory reset. For example, installing a new ROM with a different Android version than the one currently on the phone requires a full factory data reset. If you can't clear the data, the phone won't boot.

How to unlock a locked Samsung Galaxy A51

Based on the cause of the boot loop on your Galaxy A51, there are several solutions you need to try. For example, if you installed the wrong firmware or ROM, you need to install a new stock firmware. If you have installed the correct ROM but your phone is still stuck in a boot loop, you should wipe the data and perform a factory reset. In other cases, all you have to do is turn off the phone and restart it.

1. Force stop

Most of the time, this simple solution will fix the problem. For one reason or another, your phone may freeze during startup and fail to load Android. You can solve this problem by forcing the phone to shut down. 

Press and hold the Volume Down + Power buttons at the same time. Keep them pressed until the screen goes black. Then press and hold the power button until the phone boots.

2. Erase data and hard reset

If the phone does not pass the startup animation logo even after you force it to shut down, then there is a problem with the software. One solution to the Galaxy A51 boot loop is to wipe data and perform a hard reset to factory settings. This is a very successful trick that solves the problem most of the time.

Normally, you can reset your phone from the settings menu. However, as the phone does not boot and we do not have access to the settings panel. In this case, you need to perform a factory reset from recovery mode. Reset is software available on all Android phones. It is used exactly for emergency cases like this one.

3. Install the official firmware on your Galaxy A51

If restarting the phone and wiping data don't work, the last resort is flashing a stock firmware file. If you have installed the wrong ROM or incompatible mod, a simple factory reset won't fix the problem because the entire Android firmware is corrupted. 

The only solution is to perform a firmware installation to restore everything. This is the ultimate solution to unlock a locked Galaxy A51 and fix boot loop issue. Stock firmware can be flashed using Odin.


There are a number of reasons why you might lock your phone. Sometimes it is a bug in the system that is quickly fixed with a forced reboot. Other times the reason may be a wrong custom ROM or corrupted firmware. No matter what, there is a solution for your stuck Galaxy A51.

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