MSA on Android: what is it and how to disable it

Users of smartphones, especially budget models from Chinese brands, often encounter incomprehensible processes in the task manager. One of the most discussed is com.miui.msa or simply MSA. Many people notice that this service consumes RAM and battery, and also raises suspicions due to the sudden appearance of advertising banners in system applications. A logical question arises: is this a virus and is it worth fighting it with radical methods?

In fact, MSA stands for MIUI System Ads. This is a system component built into the MIUI shell from the company Xiaomi, and is also found in some versions of other custom Android-based firmware. Its main task is to control the display of advertising inside standard utilities such as Music, Explorer, Downloads and the lock screen. Although the company positions this as a way to reduce the cost of devices for the end buyer, for many users such interference in the operation of the system becomes an irritating factor.

In this article we will analyze in detail what this process is, why it can consume device resources and what legal ways exist to limit its activity or completely disable it. It is important to understand that removing system components requires caution, but in the case of an advertising module, the risks are minimal if you follow proven instructions.

Purpose and functions of the MSA service

The fundamental task MSA is to aggregate data about user behavior for targeted advertising. When you open a standard application, this service analyzes your actions and loads relevant advertising content. This is not just a banner, but a complex system that runs in the background and constantly contacts the developer’s servers.

In addition to displaying advertising, the process MIUI System Ads collects statistics on device use. This data is used to improve recommendation algorithms, but from a privacy perspective, it raises questions among many security experts. The system tries to determine your interests, frequency of application use and geolocation.

It is worth noting that the presence of this process does not mean that your phone is infected with malware. This is a legitimate piece of software installed out of the box by the manufacturer. However, its operation may negatively affect the autonomy of the gadget, especially on older models with a small battery capacity.

⚠️ Attention: Complete removal of system packages via ADB may lead to unstable operation of some shell functions. It is recommended to first try to disable advertising through the settings before resorting to drastic measures.

The impact of the process on performance and battery

Many smartphone owners complain that MSA significantly drains the battery. This is because the service runs in the background and requires a constant internet connection to load new ad creatives. If you have a weak network connection, the process may get stuck trying to synchronize, which puts additional load on the processor.

RAM consumption is also a common problem. In the task manager, you can see that the service is taking up between 50 and 150 MB of RAM. For modern flagships this is not much, but for budget devices with 3-4 GB of memory, every megabyte counts. The constant operation of this daemon can lead to other applications being unloaded from memory more often.

There is an opinion that disabling advertising speeds up the interface. Indeed, the absence of the need to load heavy banners and animations makes opening system folders and applications more instantaneous. MIUI It becomes more responsive, micro-delays when navigating through the menu disappear.

How to disable advertising through MIUI settings

The safest and easiest way to deal with intrusive banners is to use the built-in switches in the settings menu. Manufacturers leave this option, although they hide it quite deeply. You do not need superuser rights or a connection to a computer.

First, you need to go to the basic system settings. Find the section Password and security or Advanced settings, depending on your firmware version. There you should find the item Access to personal data. In the list of applications, find msa and deny it access to the Internet and personal data.

Next you need to disable ad personalization. Go to menu Settings → Password & Security → Privacy → Advertising Services. Here you need to activate the switch Turn off ad personalization. It is also recommended to revoke your consent to receive advertising in each system application separately.

The process of revoking consent may require patience. The system often makes the "Recall" button inactive for the first few seconds or shows a countdown timer. You will have to wait 10 seconds before confirmation becomes available. This is done intentionally to complicate the disabling procedure for the user.

Complete removal of the service via ADB

If the standard settings do not help or you want to be sure to get rid of the process, you can use the tool Android Debug Bridge (ADB). This method requires connecting your smartphone to your computer via USB and turning on debugging mode. It allows you to remove system applications without obtaining root access.

First enable USB debugging. To do this, go to Settings → About phone and click 7 times on the item MIUI versionto unlock the menu for developers. Then in the section For developers activate the toggle switch USB debugging.

Connect phone to the PC and open the command line in the folder with ADB installed. Enter the command to check the connection:

adb devices

If the device is displayed in the list, you can proceed to remove the package. The command to uninstall the advertising module is as follows:

adb shell pm uninstall -k --user 0 com.miui.msa

After executing the command, the system will report success. The process MSA will disappear from the list of running services, and advertising in system applications should stop.

⚠️ Attention: The interface and menu names may differ depending on the version of Android and the shell. If you do not find the specified item, use the search in the phone settings.

What to do if ADB does not see the phone?

Make sure that ADB drivers for your operating system are installed. Try using a different USB cable, preferably the original one, and connect it to the USB 2.0 port on the back of the computer, since USB 3.0 ports sometimes cause compatibility issues with older devices.

Alternative methods for blocking ads

In addition to deleting the process itself, there are methods to block the traffic it generates. Using private DNS servers allows you to filter advertising requests at the network level without affecting system files. This is a universal method that works on any version of Android 9 and higher.

In the network settings, find the item Private DNS (Private DNS). Select the “Provider Host Name” mode and enter the address of the ad blocking service, for example dns.adguard.com. After saving, all requests to known ad servers will be blocked, including those initiated by the Private DNS service. Another option is to use special blocking applications, such as MIUI System Ads.

Another option is to use special blocking applications, such as Blokada or AdGuard. They create a local VPN tunnel on the device and filter traffic. However, such applications themselves consume battery resources, which can offset the benefit from disabling advertising.

Blocking method	Complexity	Efficiency	Risk to the system
Settings privacy	Low	Medium	Absent
Disable via ADB	Medium	High	Minimal
Private DNS	Low	High	None
Third-party blockers	Low	High	Medium (battery consumption)

Possible problems after disconnection

Users who decide to completely uninstall MSAsometimes encounter unexpected side effects. In rare cases, some features of standard apps that depended on ad modules to display content may stop working. For example, in the Music application, recommendations for new tracks may disappear.

It is also possible that errors may appear in the operation of the theme. Since the advertising service is closely integrated with the system interface MIUI, its forced removal may result in some theme elements being displayed incorrectly or being reset to standard ones.

If you notice unstable operation of the phone after executing ADB commands, you can always return the package back. To do this, just enter the command:

adb shell cmd package install-existing com.miui.msa

This will restore the system component to its original state without the need to flash the device.

Frequently asked questions

Is the MSA process a virus?

No, it is not a virus. This is a legal system application pre-installed by the smartphone manufacturer (usually Xiaomi) to display advertising. It does not steal passwords from banking applications, but collects anonymized usage statistics.

Is it possible to remove MSA without a computer?

It is impossible to completely remove a system package without a PC and superuser rights (Root). However, you can limit its activities as much as possible through privacy settings and blocking Internet access in the applications section.

Will advertising return after a system update?

Yes, when updating the firmware or resetting to factory settings, all system applications, including MSA, are restored. You will have to repeat the procedure for disabling or blocking via DNS.

Is it safe to revoke consent to receive advertising?

Absolutely safe. This is a standard shell function provided by the developers. The only difficulty is the artificially created inconvenience in the interface (timers and hidden buttons) to make the user change his mind.

Why did the phone start working faster after disabling MSA?

The RAM that the process occupied is freed up, and background network requests stop. The processor is less loaded by processing advertising scripts, which is especially noticeable on budget devices.