A modern Android-based smartphone turns into a personal computer, and along with the growth of functionality, the amount of installed software inevitably increases. Users often encounter situations where the device starts to slow down, the memory becomes full, and the battery drains faster than desired. The reason for this is most often not the physical wear and tear of components, but software chaos - a set of utilities that either duplicate system functions, are malicious, or are simply useless.
In this article we will draw a detailed line between what what applications are needed on Android for full-fledged work, and that software that can and should be removed without regret. We will not rely on the marketing promises of the developers, but will consider the real architecture of the mobile operating system. Understanding how Android OS"under the hood" works will help you get rid of the illusion of the need for third-party "accelerators" and "cleaners", which often do more harm than good.
There is a misconception that the more tools installed on the phone, the safer and faster it is. In practice, each extra process consumes RAM and CPU resources. Our task is to optimize the ecosystem of your gadget, leaving only time-tested and community-tested tools that solve specific problems that are not accessible by standard means.
System basis: what cannot be deleted under any circumstances
Before you start cleaning, you need to clearly understand which components are the foundation of the operating system. Removing or disabling system applications can lead to unstable operation of the device, endless reboots or complete inoperability (“bricked”). This primarily concerns services Google Play Servicesthat provide notifications, contact synchronization, geolocation and authorization in most popular applications.
Package managers, system data storage and power management drivers are also critical elements. Users often confuse system processes with viruses or junk when they see them in lists of running services. However, modern versions of Android, such as Android 13 or Android 14, have built-in self-regulation mechanisms that do not require third-party intervention in the basic kernel processes.
⚠️ Attention: Before deleting any application whose name contains the words "System", "Framework", "Google" or "Service", be sure to check it appointment in a reliable source. An error may lead to loss of warranty and the need to reflash the device.
You should not touch pre-installed launchers if you do not plan to install an alternative interface. The standard shell from the manufacturer (whether One UI, MIUI or Pixel Launcher) is optimized for specific hardware better than any third-party solutions. Trying to replace system components often results in memory leaks and slower animations.
If you accidentally deleted an important system application, don't panic. Try resetting your phone to factory settings through the Recovery Mode; this will return the original set of apps.
The myth about antiviruses and memory cleaners
One of the most common questions is: “Do you need an antivirus on Android?” The expert's answer may surprise you: for the vast majority of users, no. Android architecture is based on the sandboxing principle, where each application is isolated from others and does not have access to system files without the user's explicit permission. Built-in scanner Google Play Protect automatically checks all downloaded files and installed apps.
Third-party antiviruses from well-known vendors often turn into heavyweight harvesters that consume more resources than the potential threats they protect against. They work in the background, constantly scanning the system, which drains the battery. The real threat comes not from viruses in the classical sense, but from phishing and issuing excessive permissions to dubious applications.
A similar situation is observed with applications for “cleaning memory” and “speeding up the phone.” The Android operating system is designed to make the most of available RAM. An empty memory is a wasted memory. When an application is unloaded from RAM artificially, the system has to waste processor energy to reload it the next time it is launched.
| Utility type | Real benefit | Harm to the system | Verdict |
|---|---|---|---|
| Third-party Anti-Virus | Low (duplicates Play Protect) | High (battery drain, advertising) | Not needed |
| RAM Cleaner (RAM Booster) | None | High (application crashes) | Harmful |
| CPU cooling | Zero (cannot be cooled by software) | Medium (CPU load) | Cheat |
| Permission manager | Medium (available in Android settings) | Low | Redundant |
Why don't "cooling" applications work?
The physical temperature of the processor can only be reduced by reducing the load or improving the heat dissipation of the case. apps that promise to “cool down your phone in 1 click” simply forcefully close processes, which is a temporary and ineffective measure, often accompanied by intrusive advertising.
Minimum required: a basic set of applications
Now let's move on to what applications are really needed for a comfortable life. The basic set should cover the needs for communication, navigation, data security and content consumption. The choice of specific apps depends on your preferences, but there are generally recognized market leaders that demonstrate stability and security.
First of all, these are messengers and social network clients. For most users, this Telegram, WhatsApp or their analogues. It is important to install them only from the official store Google Playto avoid modified versions with bookmarks. The second essential element is a reliable browser. Standard Chrome is good, but alternatives like Firefox or Brave may offer better privacy protection and engine-level tracker blocking.
- 🛡️ Password manager: Bitwarden or built-in Google Password Manager for securely storing credentials.
- 🗺️ Navigation: Yandex.Maps or Google Maps with pre-loaded offline maps for working without the Internet.
- 📁 File manager: Files by Google or Solid Explorer for competent management of documents and media.
- 🎵 Media player: VLC for Android, which plays almost any video and audio format without installing additional codecs.
Don't forget about two-factor authentication. Application Google Authenticator or Microsoft Authenticator should be installed for everyone who cares about the security of their accounts in banks and social networks. This is the case when one small application prevents huge problems.
Category "Trash": what you need to get rid of immediately
There is a whole layer of applications that do not carry any useful load, but only take up space and show advertising. These include so-called “cache cleaners,” which promise to free up gigabytes of space by deleting temporary files. In fact, deleting the cache slows down applications, since they have to re-download data from the network or recalculate graphics.
A special category is made up of “battery saving” aggregator applications. They (claim) that they can extend your battery life by 50%, but in reality they only limit the background activity of the apps you need, which can cause you to miss an important notification. Power management in modern Android smartphones (starting from version 9.0 Pie) is implemented at the kernel level and works much more efficiently than any third-party solutions.
⚠️ Attention: Avoid installing applications with names like "Fast Charging", "Battery Saver", "Clean Master" from unknown developers. They often contain aggressive advertising or miners hidden under the guise of useful utilities.
Duplicates of standard functions are also considered unnecessary software. If you have an excellent standard calculator, alarm clock and voice recorder, installing third-party analogues is justified only if they provide unique functionality (for example, a scientific calculator with graphs or a voice recorder with transcription). Otherwise, you simply clutter the menu and increase the time it takes to find the desired icon.
The best optimization of Android is the absence of unnecessary applications. The system itself knows how to distribute resources if it is not disturbed by hundreds of background processes from “accelerators”.
Data security and permission management
The issue of security on Android lies not in the area of installing antiviruses, but in proper management of permissions. Each application requests access to certain phone functions: camera, microphone, geolocation, contacts. It is critical to regularly audit these settings.
Go to Settings → Applications → Permission Manager. Check whether the flashlight really needs access to your contacts, and whether the simple photo editor really needs access to your geolocation. If an application requests excessive rights, this is a red flag. In modern versions of Android, you can grant permissions only while the application is in use (“Only while in use”) or generally deny access to sensitive data.
For advanced users, it is possible to use profiles or “Guest” mode to install dubious applications, isolating them from the main data. It is also recommended to regularly update not only applications, but also the operating system itself. Security patches close vulnerabilities through which attackers can gain access to the device without installing malware.
☑️ Smartphone security audit
How to distinguish useful software from bloatware
The term bloatware (bloatware) refers to apps pre-installed by the smartphone manufacturer or telecom operator that the user cannot remove using standard means. Often these are games, streaming services or partner apps from stores. They take up memory space and can run in the background.
To determine whether an application can be deleted, go to Settings → Applications. If the “Delete” button is active, feel free to remove the app if you don’t need it. If only the Disable button is available, use it. This will hide the application from the menu and prevent it from launching, freeing up resources, although it will continue to take up memory space.
To completely remove system bloatware, more complex methods are required, such as using ADB (Android Debug Bridge) via a computer. This allows you to remove even those applications that the manufacturer has hidden from the user’s eyes. However, this method requires caution: removing critical components may break the operation of the smartphone.
adb shell pm uninstall -k --user 0Use this command only after thoroughly searching the Internet for information about a specific package. For example, deleting the package com.facebook.katana is safe if you don't use Facebook, but deleting com.android.systemui will cause the interface to crash.
What is ADB and how to enable it?
ADB (Android Debug Bridge) is a command line tool that allows you to manage your device from a computer. For it to work, you need to enable "Developer Mode" in the phone settings (by clicking 7 times on the build number in the "About phone" section) and activate the "USB Debugging" item.
Frequently asked questions (FAQ)
Do I need to install an antivirus on a new Samsung or Xiaomi phone?
No, this no need. Built-in security systems (Samsung Knox, MIUI protection) combined with Google Play Protect provide a sufficient level of protection for the average user. A third-party antivirus will only slow down the device.
Is it true that you need to regularly clear the cache of all applications?
No, this is a myth. The cache speeds up application loading and reduces traffic consumption. You should clear the cache only if a particular application is not working correctly or has taken up an abnormally large amount of space (hundreds of megabytes or gigabytes) for no apparent reason.
What applications are the most dangerous for Android?
The greatest threat is posed by applications downloaded from third-party sources (not from Google Play), especially those that ask for device administrator rights or access to special features (Accessibility). Fake versions of popular apps (for example, "WhatsApp Gold") are also dangerous.
Can Google Play Services be removed?
No, they cannot be removed. This is a system component required for the application store, maps, synchronization and most third-party apps. Without it, the phone will turn into a “brick” in terms of functionality.
Does a large number of installed games slow down the phone?
The games themselves, installed but not running, do not affect the speed of operation. They take up space in the internal memory. If the memory is full to capacity (less than 10% of free space left), then the system will really start to slow down. Otherwise, the number of icons on the screen does not affect performance.