Users often encounter the need to return the device to its original state. Full formatting a smartphone is required when selling a gadget, eliminating system errors, or before installing custom firmware. The procedure deletes all personal data, including photos, contacts and installed applications, returning the system to its original appearance.
The process of clearing the internal memory can be performed in several ways depending on the state of the device. If the smartphone turns on and responds to touches, the standard settings menu is used. In situations where the system is frozen or locked, you will need to enter a special mode Recovery. It is important to understand the difference between a simple reset and a deep format, as the methods have different implications for data security.
Before starting any manipulations, it is critical to create a backup copy of the information. Even if the goal is to sell the phone, the new owner may need guarantees of performance, and you may need the ability to restore access to accounts. Format through the settings menu does not guarantee irreversible data deletion for professionals who use special recovery software.
Preparing the device for the reset procedure
Ignoring the preparatory stage may lead to permanent loss of important information or blocking of the device by Google protection. The first step should always be to synchronize your data with cloud storage or copy files to your computer. Pay special attention to the list of contacts and photos, which are often stored only in the internal memory.
The second critical point is unlinking accounts. Android security system has FRP (Factory Reset Protection) function. If you perform a reset without logging out of your Google profile, the next time you activate your phone you will be prompted for the password for the last account you used. Without this data, the device will turn into a “brick” for the average user.
- 📸 Back up your media files to an external drive or to the cloud.
- 🔑 Write down passwords for important applications, as they will be deleted along with the cache.
- 🔋 Charge the battery to at least 70% so that the process is not interrupted due to discharge.
- 📱 Remove the microSD memory card and SIM card before starting the operation.
☑️ Preparing for formatting
⚠️ Attention: Make sure you remember the lock screen password and SIM card PIN code. After a reset, the device's protection may require re-entering this data to confirm the owner.
Reset through the standard settings menu
The safest and easiest way to clear the phone is available directly from the operating system interface. This method is suitable for devices that function stably and allow menu navigation. The algorithm of actions may differ slightly depending on the manufacturer's shell, for example, MIUI, OneUI or ColorOS.
You need to find the partition responsible for system recovery. It's usually hidden deep in the options menu. Find item Reset settings or Restore and reset. In some versions of Android, the path looks like Settings → System → Advanced settings → Reset.
After selecting “Reset data”, the system will show a warning about which files will be deleted. Study the list carefully. If you inserted a memory card, the system may offer an option to "Empty SD card". Be careful: if there are important files on the flash drive, uncheck this box, otherwise they will disappear forever.
Before pressing the reset button, turn off the Internet. This will prevent accidental synchronization of new data or triggering of remote lock commands at the time of cleaning.
To confirm the action, you will need to enter a digital password, pattern, or fingerprint. After this, the data deletion process will begin, which will take from 5 to 15 minutes. The device will reboot automatically and start up as new, prompting you to select a language and connect to Wi-Fi.
Using Recovery mode for formatting
Method through the menu Recovery is necessary if the smartphone does not boot, is stuck on the logo, or you have forgotten the pattern key. This is a low-level mode built into the device's memory independent of the underlying operating system. You can enter it using a combination of physical buttons when the device is turned off.
Key combinations vary among different manufacturers. The most common use is to press and hold the volume down button and the power button. For devices with a Home button, such as older models Samsung, you may need to hold down all three buttons at the same time. Hold them until the brand logo or the recovery menu appears.
Volume Down + Power (most devices)Volume Up + Power (some Pixel and OnePlus models)
Home + Volume Up + Power (old Samsung)
In the Recovery menu, control is carried out with buttons volume (up/down), and the selection is confirmed with the power button. You need to find the item Wipe data/factory reset. Selecting this item will start the process of formatting the data section. Confirm the action by selecting Yes or Confirm.
What if the menu is in English?
Use a translator on a friend’s phone to accurately understand the menu items. Typically the reset item contains the words Wipe, Reset or Factory. Do not select items called Wipe Cache, as this will only clear temporary files, not personal data.
| Manufacturer | Button combination | Menu features |
|---|---|---|
| Samsung | Volume Up + Power (with off) | Requires a USB cable to be connected to the PC on new models |
| Xiaomi / Redmi | Volume Up + Power | Menu is often available in several languages |
| Google Pixel | Volume Down + Power | Navigation sensor or buttons depending on the version |
| Huawei / Honor | Volume Up + Power | Sometimes you need to enter a wait time before entering |
⚠️ Attention: The Recovery interface can be updated with new versions of Android. On some modern smartphones, to enter recovery mode, you need to connect the device to the computer with a cable.
Deep cleaning via computer and ADB
For advanced users, there is a formatting method via the Android debugging bridge (ADB). This method allows you to reset even in some cases where the touch screen does not work but the system boots. This will require ADB drivers installed on the computer and USB debugging enabled in the developer settings.
Connect your smartphone to the PC and open the command line in the ADB tools folder. Enter a command to reboot into recovery mode or immediately send a reset command. This method gives deeper access to the file system compared to the standard menu.
adb reboot recovery
adb shell recovery --wipe_data
Use ADB allows you to automate the process or perform it remotely if the device is connected to the network and configured accordingly. However, for the average user, this method carries an increased risk of errors when entering commands, which can lead to damage to the bootloader.
The ADB method is only suitable for users who are confident in the command line, since an erroneous command can block the device's bootloader.
Format nuances when selling a device
If you are preparing the phone for sale, A simple reset may not be sufficient from a security perspective. The standard procedure for deleting files only marks the disk space as free, but the data physically remains there until it is overwritten. Specialized software can recover deleted photos and correspondence.
To make data recovery impossible, after the first reset, fill the internal memory of the device with “junk” files. Download large video files or archives until the memory is completely full. Then perform the reset procedure again. This ensures that old data will be overwritten with new information.
- 🗑️ Perform a full reset via the menu.
- 💾 Fill the memory with large unnecessary files (videos, archives).
- 🔄 Repeat the reset procedure a second time.
- 🚫 Do not sign into your Google account during the initial setup before selling.
This approach, called “overwriting,” makes it much more difficult for criminals or curious buyers trying to recover your personal information. For most selling scenarios, this is enough to consider the data destroyed.
⚠️ Attention: When selling the device, be sure to remove the FRP lock (Google Lock). To do this, you need to remove the Google account from the phone settings to reset, otherwise the buyer will not be able to activate the phone.
Possible problems and ways to solve them
Sometimes after formatting the device may get stuck in a reboot loop or not turn on at all. This is often due to damage to system files during recording or a power failure. If the phone shows the logo and reboots endlessly, you may need to flash the device via a computer.
Another common problem is an error when checking the DRM license or the operation of the cameras. This happens if the bootloader was unlocked before the reset. In such cases, a standard reset does not help, and you need to contact a service center to restore the software.
If after resetting the phone asks for a password for your old Google account, and you don’t remember it, the activation procedure will block the device. The only legal solution is to restore access to your account through the Google website on another device. Bypassing this protection is illegal and requires complex intervention in the software.
Why does the phone heat up after a reset?
In the first hours after formatting, the system indexes files and optimizes applications. This is a normal process that causes heat and increased battery consumption. It usually completes within a day.
Will formatting remove the virus from the phone?
Yes, a full factory reset (Factory Reset) deletes all user applications and data, so most viruses and malware will be eliminated. However, if a virus has penetrated the system partition (which is rare for ordinary users), a simple reset may not be enough.
Is it possible to recover a photo after formatting?
Theoretically, yes, if the data was not overwritten. Special recovery apps can find deleted files until new information is written in their place. That is why it is recommended to fill the memory with garbage before selling.
How long does the formatting process take?
Usually the procedure takes from 5 to 15 minutes depending on the amount of internal memory and processor speed. The first power-on after a reset may take longer (up to 10 minutes) as the system adjusts the settings.
Do I need to remove the SIM card before resetting?
It is recommended to remove the SIM card and microSD memory card. Although resetting your phone should not affect the external card, an accidental mistake or selecting the “Clear All” option can lead to data loss on the storage device.
What is FRP and why does it work?
FRP (Factory Reset Protection) is an anti-theft system. If you reset your phone without logging out of your Google account, when you turn it on, it will require a password for this account. This is done so that the thief cannot simply reset the settings and use the phone.