Resetting the settings to factory settings is a radical, but often necessary step in the life of the owner of an Android smartphone. Users resort to this procedure for various reasons: the device began to work slowly, constantly produces system errors, or you simply want to transfer the gadget to a new owner and clear it of personal information. However, behind the "Reset settings" button hides an irreversible process that radically changes the state of the operating system.
Before clicking on the red button in the menu, it is extremely important to understand working mechanism this function. This isn't just clearing the cache or deleting a couple of apps. In fact, you return the software to the state in which it was when the device left the manufacturing plant. All changes you made during operation will be canceled without the possibility of simple recovery through the recycle bin.
Many people underestimate the scale of the consequences, relying on automatic cloud backups or intuitively believing that contacts will be saved by themselves. In practice, the situation is often more complicated, and the loss of valuable photographs or work documents can be an unpleasant surprise. In this article, we will analyze in detail what exactly happens to your device when the reset is initiated and what unobvious risks may await you.
Complete deletion of user data and files
The first and most obvious consequence of the procedure is a total cleaning of the internal storage. The operating system Android deletes all files that were created or downloaded by the user after the device was first turned on. We are talking not only about photos in the gallery, but also about documents in the folder Download, audio recordings of the voice recorder and the messenger cache.
The system partition responsible for user data is formatted. This means that the file structure is reset to zero. Even if you deleted some application a week ago, but its residual files were deep in the system folders, they will also disappear. Internal memory It will become absolutely clean, as if you just took the phone out of the box.
It is important to note that the files are on the memory card microSD usually not affected unless you specifically select the option to format the external drive. However, modern smartphones often use a memory card as part of the internal storage (Adoptable Storage), in which case it will be erased along with the main disk.
⚠️ Attention: If you use a memory card as internal storage, when you reset the settings, it will be formatted and encrypted again, which will make the old data on it unreadable without the encryption key, which will be destroyed.
The deletion process is quite fast, but it is not instantaneous for large volumes of data. At this time, the phone may respond to presses with a delay or not respond at all until the procedure for erasing memory sectors is completed.
☑️ What needs to be saved before resetting
Disappearance of installed applications and their settings
The second blow falls on the ecosystem of installed apps. All applications that you downloaded from Google Play or installed through APKfiles will be permanently deleted. This applies not only to games and social networks, but also to banking clients, navigators and utilities for work.
Moreover, not only the apps themselves are deleted, but also all their local settings. You will lose the history of correspondence in instant messengers (if synchronization is not enabled), progress in offline games, saved routes in navigation and logins that the browser remembers to autofill forms. Local databases applications are completely erased.
After turning on the phone, you will have to go through the process of setting up each service again. This can take from several hours to a whole day, depending on the amount of software used. Some applications may require re-verification via SMS or email.
Particular attention should be paid to authenticator applications, such as Google Authenticator or Microsoft Authenticator. If you haven't exported the codes or linked them to your cloud account in advance, you will lose access to all services protected by two-factor authentication. Restoring access in such cases can be an extremely difficult and lengthy process.
What happens to superuser (Root) rights?
If root access were obtained on your device, then during a standard reset they are most often saved, since they are located in the system partition, which is not formatted. However, all installed modules (for example, through Magisk) and superuser settings will be deleted, and they will need to be reconfigured after the first login.
Resetting system settings and network configuration
All your personal preferences in system settings disappear along with files and applications. Screen brightness, wait time before the display turns off, font size, notification sounds and wallpaper will all return to factory defaults.
Network settings are also completely cleared. You will have to re-enter passwords for all Wi-Fi networks to which you previously connected. Paired Bluetooth devices, such as headphones, watches or car headsets, will be “forgotten” by the phone, and the pairing procedure will have to be completed again.
Mobile network settings, including access points APN for the Internet, also will reset. Usually the phone automatically downloads them from the telecom operator, but in rare cases, especially when using corporate SIM cards or roaming, you may need to manually configure the Internet settings.
| Setting type | What happens during a reset | The need for recovery |
|---|---|---|
| Wi-Fi networks | Deleting all saved networks and passwords | High (you need to enter passwords manually) |
| Bluetooth | Breaking all pairings with devices | Medium (you need to re-install the device) |
| mobile data | Resetting APN access points to factory ones | Low (usually configured automatically) |
| Sounds and vibration | Return to standard ringtones | Low (a matter of personal preferences) |
Restrictions and parental controls are also reset if they were configured locally on the device without being linked to an external control server. This can be both a plus if you forgot the lock password, and a minus if control was necessary for the safety of the child.
Impact on Google accounts and theft protection
One of the critical points is deleting accounts from the system. All accounts Google, as well as accounts of social networks and email services added to the phone settings will be deleted. The next time you turn on the device, it will require authorization.
This is where the protection mechanism comes into effect. FRP (Factory Reset Protection). This is an Android security feature that ties your device to the last Google account you used. If you reset the settings without logging out of your account first, then during the first setup the phone will require you to enter the login and password for this particular account.
This is done to protect against theft: if a thief steals the phone and resets the settings, he will not be able to use it without access to the owner's account. However, for an honest user, this can become a problem if he has forgotten the password for his Google account. In this case, the phone will turn into a “brick”, which will be practically impossible to officially unlock.
⚠️ Attention: Before resetting the settings, be sure to make sure that you remember the password for the main Google account linked to the device. Otherwise, FRP lock will be triggered and access to the phone will be lost.
All synchronization data stored locally only will also be deleted. Although contacts and calendars are usually stored in the cloud, any notes created in local applications without synchronization will be lost.
Returning to the original firmware version and uninstalling updates
Many users mistakenly believe that resetting the settings will roll back the version of Android to the one they had when they purchased it. This is wrong. The reset affects only the partition with user data (/data), but does not affect the system partition (/system).
All received OTA updates (over-the-air updates) will remain in place. If you updated your phone to the latest version of Android, then after the reset it will remain the same version, just in a “clean” form, without garbage and customized applications. It is impossible to roll back to an older firmware version through the settings menu.
However, if you installed custom themes, launchers, or modified system files (if you have root access), these changes may be eliminated, since they are often stored in the user partition or depend on configuration files that will be deleted. The phone will look the way the manufacturer intended for this software version.
Sometimes after a reset, the device may start downloading updates again, since the update cache is also cleared. This can lead to the fact that the phone immediately after turning on will begin to actively download gigabytes of data, using up traffic and battery power.
If your goal is to roll back the Android version to an older one, resetting the settings will not help. This requires a complex procedure for flashing the device through a computer using special utilities like Odin (for Samsung) or Fastboot (for Pixel and others).
Impact on performance and battery life
Why then do a reset if it does not roll back the system version? The main goal is to combat software errors and “garbage”. Over time, fragmented files, erroneous logs and settings conflicts accumulate in the system, which can cause interface slowdowns.
After resetting performance the device, it often increases noticeably. RAM is freed from background processes of “heavy” applications, and the processor stops servicing erroneous services. The phone starts to work faster, animations become smoother.
As for the battery, the effect can be twofold. On the one hand, removing energy-consuming applications and background services extends battery life. On the other hand, immediately after the reset, the system begins active file indexing and data synchronization, which in the first hours can lead to increased battery consumption and heating of the case.
Usually 24-48 hours after the reset, the situation stabilizes, and battery life reaches the optimal level. If problems with the battery persist even after a clean reset, most likely the reason lies in the physical wear of the battery, and not in the software.
Resetting the settings effectively eliminates software lags and errors caused by the accumulation of garbage in the system, but is not able to fix physical hardware faults or roll back the Android version.
⚠️ Attention: Menu interfaces and item names may differ slightly depending on the smartphone model and shell version (MIUI, OneUI, ColorOS, etc.). Always check the official user manual for your specific model before starting the procedure.
Frequently asked questions (FAQ)
Will a factory reset remove the virus or malware?
In most cases, yes. Since the virus is usually found as an installed application or file in the internal storage, formatting the data partition will destroy it. However, there are rare types of viruses that can penetrate the system partition and are not removed by a reset.
Is it possible to restore data after resetting the settings?
For an ordinary user - no. The data is overwritten and the encryption keys are deleted. There are expensive laboratory recovery methods, but they do not guarantee results and are very expensive. The only hope is a backup in the cloud.
How long does the reset process take?
Usually the process takes from 5 to 15 minutes, depending on the amount of internal memory and processor speed. The phone may reboot several times during the process. It is strictly forbidden to interrupt it.
Do I need to remove the SIM card before resetting?
No, this is not necessary. The SIM card is not affected by the phone reset process. However, contacts saved on the SIM card (and not in the phone memory or Google account) will remain safe on it.
What to do if the phone asks for a password after resetting?
This is FRP protection. You need to enter the login and password for the Google account that was synchronized with the phone before the reset. If you have forgotten your password, restore it through your computer on the Google website.