Smartphones series Samsung Galaxy A are widely used due to their optimal price-performance ratio, but over time, even a reliable device can start to work slower or produce system errors. Owners of the model Samsung A12 often are faced with the need to completely reset the settings in order to return the device to its former operating speed or prepare it for sale to a new owner. Formatting is a radical but effective method for solving software failures, which clears the internal memory of accumulated garbage and returns the system to its original state.
Before you begin the procedure, you need to clearly understand the difference between simply deleting files and a complete reset. When you erase photos or delete applications manually, hidden logs, caches and temporary files remain in system folders and continue to take up space. Formatting destroys all user data permanently, reinstalling the file system structure from scratch. This action is irreversible, so it should be approached with maximum responsibility and preparation.
In this material we will analyze in detail all the available ways to perform this operation on your device. You will learn how to safely prepare your gadget for the procedure, what reset methods exist through the menu and hardware buttons, and how to avoid common mistakes that can turn your phone into a “brick.” Follow the instructions carefully so that you are pleased with the result.
Preparing the device before a full reset
Any intervention in the system files of the smartphone carries the risk of losing information, so the preparation stage is critically important. First of all, you need to create a complete backup of all your valuable data: contacts, photos, videos and notes. In the ecosystem Samsung for this, it is convenient to use a cloud service Samsung Cloud or an account Google Drivethat automatically synchronizes data when connected to the Internet.
Be sure to check the battery level before starting the procedure. The formatting process can take anywhere from 10 to 30 minutes depending on how much memory is full, and if the phone shuts down in the middle of the process, it could damage the bootloader. It is recommended to have at least 60-70% charge or connect the device to a charger throughout the entire operation.
Another important nuance concerns account protection. Modern versions of Android have built-in FRP (Factory Reset Protection) protection, which requires you to enter your Google account information after the reset. If you forget your password, it will be extremely difficult to unlock your phone. Therefore, make sure you remember your login information or temporarily delete your account from the settings.
- 🔋 Charge the battery to at least 60% or connect the power cable.
- ☁️ Synchronize your contacts and media files with cloud storage.
- 🔓 Remember your lock screen password and Google account data.
- 💾 Remove the microSD memory card, if installed, so as not to accidentally format it.
⚠️ Attention: Removing the memory card is a mandatory step if you plan to sell the device. The internal memory will be cleared, but the data on the external card may remain, and the new owner will have access to your personal files.
☑️ Preparing for formatting
Method 1: Reset through the Android settings menu
The simplest and safest method of formatting the phone Samsung A12 available directly from the interface system operating system. This method is suitable for devices that turn on and allow the user to navigate the menu normally. The algorithm of actions is standardized for the shell One UI, but may differ slightly depending on the firmware version.
First, open the main menu and find the icon Settings, usually located at the top of the application list or in the notification shade. Scroll down the list of options to the General settings or Systemsection. This is where the tools for managing memory and resetting the device are concentrated.
Select item Reset, after which the system will offer several options. You need a section Reset data. A warning will appear on the screen stating that all data will be deleted, including installed applications and system settings. Carefully read the list of deleted information that the smartphone will provide.
Press the button Reset at the bottom of the screen. The system may ask for confirmation in the form of a PIN, pattern, or password that you use to unlock the screen. This is a security measure to prevent accidental or unauthorized reset of settings by unauthorized persons.
⚠️ Attention: The menu interface may change after firmware updates. If you do not find the “Reset” item in the specified location, use the search in settings by entering the word “reset” in the search bar at the top of the screen.
Before clicking the final “Delete all” button, double-check that you have forgotten to save photos from the WhatsApp or Telegram folder, since instant messengers often store media files separately from the general gallery.
Method 2: Hard Reset via Recovery Mode
If the phone freezes, does not boot to the main screen, or you forgot the pattern key, the only way out is to use recovery mode Recovery Mode. This method is called Hard Reset and is performed using a combination of physical buttons, bypassing the operating system.
On modern models Samsungincluding A12, entering recovery mode has one feature. If the phone is turned off, simply holding down the buttons may not work due to security features of Android 11 and above. First, you need to connect the switched off smartphone with a USB cable to a running computer or laptop. Only after the charging icon appears can you proceed with the key combination.
Press the volume up button (Volume Up) and the power button (Power) at the same time. Hold them until the Samsunglogo appears on the screen, then release the Power button, but continue to hold the Volume button. After a few seconds, a menu with a black background and text in English will appear - this is it Android Recovery.
Control in this menu is carried out exclusively by the volume buttons (up and down to move) and the power button (to confirm the selection). Hover over the item Wipe data/factory reset and press the power button. Confirm the action by selecting Factory data reset in the menu that appears.
What to do if the Recovery menu does not appear?
If, after holding the buttons for a long time, the phone just turns on in normal mode, try another combination: connect the phone to the PC, hold down both volume and power buttons at the same time, holding them for about 10-15 seconds before the logo appears.
Features of FRP and Google account protection
After a successful reset, the phone will reboot and begin the initial setup process, similar to what you went through when you first purchased the device. At one stage, the system will require confirmation of the owner by entering the email address and password from the Google account that was synchronized with the phone before the reset.
This function is called FRP Lock (Factory Reset Protection). It was introduced to protect against theft: if an attacker steals a phone and tries to format it, he will not be able to use it without the owner’s data. For an honest user, this only means the need to remember your credentials.
If you are resetting your phone for sale, it is extremely important to delete your Google account before the formatting procedure. Go to Settings → Accounts and archiving → Account management, select your Google account and click Delete account. Only after this can a reset be made so that the new owner does not face blocking.
| Action | Risk of blocking | Required data |
|---|---|---|
| Reset via settings (with screen unlocked) | Low | Screen password blocking |
| Hard Reset (buttons) with an active account | High | Email and Google password |
| Reset after deleting an account | None | No |
Deleting a Google account before selling a device is not just a recommendation, but a necessity that will save time and nerves for the new owner by saving him from the FRP unlocking procedure.
Solving common formatting problems
Sometimes the formatting process may not go entirely smoothly. Users may encounter a situation where the phone freezes on the logo Samsung or the reset process is interrupted by an error. Most often this is due to damage to system files or insufficient free space for temporary operations.
If after a reset the phone endlessly reboots (bootloop), try entering Recovery mode again and selecting Wipe cache partition. This command clears the temporary system cache without affecting personal data (although after resetting the data, it is no longer there, but clearing the cache helps fix boot errors).
In cases where standard methods do not help, you may need to flash the device via a computer using official software Odin and firmware files from the website samfw.com or sammobile.com. However, this is a more complex procedure that requires precise selection of the software version for a specific model SM-A125F or other modification.
- 🔄 Try clearing the cache partition in Recovery Mode if the phone freezes.
- 💻 Use a PC and the Odin app to force install the firmware.
- 🔌 Check the serviceability of the USB cable and port when connecting to a computer.
⚠️ Attention: Flashing via Odin will void the warranty in some cases and carries the risk of complete loss of device functionality due to user error. Perform this procedure only if you are confident in your actions.
Frequently asked questions about resetting Samsung A12
Will the Android operating system be deleted when formatted?
No, the operating system is not deleted. A factory reset returns the phone to the software state it was in when it left the factory. The version of Android and the One UI shell will remain the same as that installed before the reset, but all user applications and settings will be deleted.
Is it possible to recover deleted photos after a Hard Reset?
Data recovery after a full formatting of the internal memory is almost impossible using standard means. If you did not have a backup copy in the cloud or on your computer, the data is considered lost forever due to overwriting of memory sectors.
How long does the reset process take on Samsung A12?
Usually the process takes from 5 to 15 minutes. The time depends on the amount of data to be erased and the speed of the flash memory. Do not interrupt the process, even if the screen goes dark or the phone seems frozen.
Do you need to insert a SIM card before formatting?
No, it is better to remove the SIM card before starting the procedure. This will protect contacts saved on the SIM card (if any) from accidental deletion, although modern smartphones store contacts mainly in the cloud or internal memory.