Many smartphone users encounter annoying notifications about the availability of a new software version. There is often a temptation to click the “Delay” button or ignore the request altogether, believing that the current operation of the device is stable and there is no need for unnecessary manipulations. However, updating the Android system is not just a change of numbers in the settings or a new boot animation, but a critical process for keeping your gadget up to date.
In the world of mobile technologies, which are developing at an incredible speed, refusing to update is tantamount to a deliberate reduction in security and performance. Manufacturers release patches not only for new functions, but also to eliminate vulnerabilities that become known to hackers immediately after the firmware is released. Ignoring this process can lead to your Android smartphone becoming easy prey for malware.
In this article we will take a detailed look at the mechanics of updating the operating system, the types of updates, their impact on the battery and performance, and also answer the question of why it is sometimes better to wait until installation. You will learn the difference between a regular security patch and a global version update, and also understand how to properly prepare your device for the procedure.
What is an Android update and how does it work technically
From a technical point of view, a system update is a replacement or modification of the operating system system files. Android is based on the Linux kernel and a set of system libraries that control the operation of the processor, memory and peripherals. When you receive a notification about an update, in fact, a new system image or differential update package has already been compiled on the manufacturer's servers.
There are two main types of updates. The first is OTA (Over-The-Air)when the package is downloaded directly to the device via the Internet. The second type is manual firmware via a computer using tools like ADB or proprietary utilities. OTA updates are most often delta updates, that is, only changed files are downloaded, which saves traffic and time.
The installation process takes place in a special memory section called Recovery. When you click the "Install" button, the smartphone reboots into this mode, checks the digital signature of the package (to ensure that the file has not been replaced by hackers) and begins replacing old system files with new ones. It is at this moment that the device cannot be turned off, since interrupting the recording can lead to the gadget becoming “bricked.”
⚠️ Attention: If during the installation process you see a robot logo with an open belly and a red triangle, do not panic. This is a normal part of recovery mode. Just wait until the progress bar completes.
It is important to understand that different manufacturers use their own shells on top of pure Android. The update from Samsung (One UI) will differ in structure and size from the update on Xiaomi (MIUI/HyperOS), although the base version of the kernel may be the same. This affects the speed of distribution of updates: owners of “pure” Android on Pixel receive updates first, and users of custom shells have to wait for the interface to adapt.
Why you need to update the system: security and new features
The main reason why cybersecurity experts insist on regular updates is to close vulnerabilities. Every month, researchers find holes in code protection through which attackers can gain access to your photos, correspondence or banking data. Security patches are released specifically to patch these holes.
In addition to security, updates bring functional improvements. Google and smartphone manufacturers are constantly working to optimize processor performance and manage power consumption. Often, after installing a new version, users notice that the smartphone begins to work faster or hold a charge longer, although at first glance no changes in the interface are visible.
Also, updates often include support for new communication standards and codecs. For example, upgrading to a new version of Android can add support, improve the module’s performance with new headphones, or add codecs for better video recording. Without a system update, these hardware capabilities may remain locked. Wi-Fi 6E, improve the module's performance Bluetooth with new headphones or add codecs for better video recording. Without a system update, these hardware capabilities may remain locked.
Before a major update to the Android version (for example, from 13 to 14), be sure to back up important data to the cloud or to a computer, even if the process is considered safe.
New interface features are also delivered through updates. These could be new widgets, an improved control panel, privacy features like hiding geolocation from applications, or new camera modes. By ignoring updates, you voluntarily limit the functionality of your device, leaving it in the past.
Types of updates: security patches and major versions
Not all updates are the same. It is important for the user to distinguish between small correction packages and global changes to the operating system version. Understanding this difference will help you adequately assess the risks and time required for installation.
Monthly security patches are small files that install critical fixes for vulnerabilities. They rarely change the appearance of the system and install quickly, often in the background. Their installation is mandatory to maintain digital security hygiene.
Major updates (for example, moving from Android 12 to Android 13 or 14) are large-scale changes. They bring a new design, redesigned settings and deep code optimization. Such updates weigh several gigabytes and require more installation time. It is after major updates that conflicts with old applications sometimes arise.
| Update type | Output frequency | File size | Main changes |
|---|---|---|---|
| Security patch | Monthly | 50 - 300 MB | Vulnerability correction, stability |
| Minor update | Once every 2-3 months | 300 MB - 1 GB | Bug fixes, minor functions |
| Major update | Once a year | 2 - 4 GB | New version of Android, design, kernel |
It is worth noting that the support period for devices varies from brand to brand. Flagships Google Pixel and Samsung receive updates within 5-7 years, while budget models may be left without support after 2 years. This is an important factor when buying a smartphone, which is often overlooked.
Security patches protect your data here and now, and major updates extend the life of the device and add new features.
How to check and install the update manually
Usually smartphones are set to automatically check for updates, but sometimes this mechanism fails, or you want speed up the process. Manual verification is a simple procedure that takes a couple of minutes. To do this, you need to go to the device settings.
The standard path in most shells looks like this: go to Settings → System → System update. On devices Samsung the path may differ: Settings → Software update. In this menu you will see the current version of Android and the date of the latest security patch.
If an update is available, the system will prompt you to download it. It is recommended to do this when connecting to a stable network Wi-Fiso as not to waste mobile traffic. Once downloaded, an install button will appear. The device will warn you that it will reboot and ask for confirmation.
☑️ Preparing for the update
In rare cases, the update may not arrive over the air, although other devices of the same model already have it. This may be due to regional distribution patterns. In such a situation, advanced users can use a computer and a utility ADB to force install a system image downloaded from the manufacturer's official website.
adb reboot bootloaderfastboot flash recovery recovery.img
fastboot reboot recovery
However, using manual flashing methods via Fastboot requires caution. Incorrect actions may void the warranty or cause the phone to malfunction. For the average user, the standard settings menu tools are sufficient.
Possible problems after updating and solutions
Despite careful testing, updates sometimes cause problems. The most common complaint from users is the rapid drainage of the battery in the first days after installation. This is due to the fact that the system takes time to re-index files and optimize applications for the new kernel.
Usually the problem with autonomy resolves itself within 3-5 days of active use. If the phone continues to heat up and quickly discharges after a week, it is possible that some third-party application is conflicting with the new version of the OS. In this case, you should check the energy consumption statistics in the settings.
⚠️ Attention: If after the update the phone freezes on the logo when turned on for more than 10 minutes, there may have been a failure when writing the system partition. Try performing a forced reboot (holding the power button for 10-15 seconds).
Another common problem is incorrect operation of banking applications or Google Pay services. New security versions may block applications that use outdated methods to access the system. The solution usually lies in updating the applications themselves via Google Play.
What to do if the Internet is lost after the update?
Try resetting the network settings. To do this, go to Settings → System → Reset settings → Reset Wi-Fi, mobile data and Bluetooth settings. This will not delete your personal data, but it will forget passwords for Wi-Fi networks.
In extreme cases, when the device is unstable, resetting to factory settings helps. This is a radical measure that completely clears the phone’s memory, so you should resort to it only after creating a full backup of all important data.
Is it worth updating: myths and reality
There is a persistent myth that updating the system on old smartphones deliberately slows down their operation in order to force the user to buy a new model. Although there have been precedents in the history of the industry (remember the scandal with Apple), in the Android world the situation is different. New versions often require more resources, and on 5-year-old processors they can actually run slower.
On the other hand, refusing to update on an old device makes it vulnerable. A compromise solution is to install only security patches, skipping major Android version updates. This will allow you to maintain acceptable speed and a basic level of protection.
It is also worth considering application support. Developers of popular software are gradually stopping support for older versions of Android. If you do not update the system, in a year or two your favorite instant messengers or banking applications may simply stop launching, displaying an OS incompatibility error.
Update old smartphones carefully: install security patches, but refrain from switching to a new major version of Android if the device is more than 3-4 years old.
It is important to follow the reviews of others users of your phone model on specialized forums before installing a major update. Sometimes a particular firmware build may contain a critical bug that the manufacturer will only fix next month. A temporary delay in updating in such cases is a reasonable strategy.
Frequently asked questions (FAQ)
Will a system update delete my photos and applications?
No, standard updating through the settings menu (OTA) does not affect user data. All your photos, contacts, applications and settings will remain in place. Data is deleted only when resetting to factory settings or during manual flashing with memory clearing.
Is it possible to roll back to a previous version of Android?
Officially, this option is rarely provided. Version rollback (Downgrade) is only possible on some models through the mode Fastboot and requires unlocking the bootloader, which will void the warranty and erase all data from the device. For ordinary users, returning to the old version is almost impossible.
Why doesn’t my device receive the update, although a friend with the same phone does?
Updates often come in waves. The manufacturer may release them in stages for different regions or serial numbers in order to track possible errors on a small group of devices before a mass rollout. Usually you just need to wait a few days to a couple of weeks.
Does the update take up a lot of memory space?
The download requires free space approximately equal to twice the size of the update file (for unpacking). Major updates may require 5-10 GB of free space. If there is little space, the system will offer to temporarily delete the cache or applications that will return after the update.