What is DiagMonAgent? Fix DiagMonAgent has Stopped [2023]

DiagMonAgent is one of the system apps that are mainly found in Samsung Android phones i.e Galaxy S6, Galaxy A5, etc. It is a Diagnostic agent that helps Samsung with monitoring the diagnostics on its user’s phone. If you are using any Samsung Android phone with Lollipop OS installed, you are likely to see a DiagMonAgent notification whenever you turn your WiFi ON.

It usually runs in the background and sends diagnostic reports to Samsung to help them improve the user experience. You can see it running on the notification bar from time to time whenever it does that. Also, it sometimes suddenly stops working that can easily be fixed. Well, In this article, we will explain What is DiagMonAgent and how you can fix the stopped issue notification. Let’s get started.

What is DiagMonAgent?

DiagMonAgent stands for Diagnostic Monitoring Agent, it is a Samsung system app that is first implanted from the Lollipop OS update for Samsung phones. Like any other system service app, its work is to send diagnostic reports to Samsung so that they can improve user experience through updates. After the phone completes its boot-up, DiagMonAgent starts running in the background.

Since it is a system package, there is no app icon to manually launch it. We only get limited control over this app like force stopping, clearing cache, etc. The functionality to disable DiagMonAgent via app settings is also inaccessible. Though, keeping it on the phone is known to be harmless. Also, it is known to only send a certain amount of details such as App crashes, app instability, compatibility, navigation error, etc.

DiagMonAgent Permissions on Android

Similar to other system apps, DiagMonAgent requires permission on Android to run and perform the task it is made for. If you are curious to know what permission it needs then you can check it by yourself by going to Settings>Apps>DiagMonAgent. After that, look into the permissions tab. By default, the “telephone” permission is allowed and you cannot revoke it since it is allowed by your Android system.

Is DiagMonAgent Safe?

DiagMonAgent is a pre-installed Samsung system app that is considered safe to keep it running as it is on phone. The app is only available from Lollipop and onwards, you will not find it in Android KitKat or lower versions. The Diagnostic Report that it collects is only shared by Samsung and also with the purpose to fix app issues that cause a bad user experience. Hence, it is no doubt a safe app and you shouldn’t worry about it.

Also Read: What is IMS Service? Fix IMS Service Has Stopped

DiagMonAgent Issues Explained

Samsung Android phone users who upgraded to Android Lollipop from Android KitKat have complained about two issues related to DiagMonAgent. Here, we will explain both of them so you can better understand them and possibly find working fixes.

1. DiagMonAgent has Stopped

DiagMonAgent has stopped

“DiagMonAgent has stopped” is a pretty common issue that Samsung smartphone users face after updating to Lollipop for the first time. What happens is suddenly a pop-up appears on the screen saying “DiagMonAgent has stopped”. This type of pop up often sends by the Android system whenever certain apps on Android stop responding. This issue mostly appears on Galaxy S6 after updating from Kitkat (4.4.4) to Lollipop (5.0.1).

How to Fix DiagMonAgent has Stopped

As soon as the DiagMonAgent has stopped message pops up, close it first and then follow the steps below.

  • Go to settings>apps>DiagMonAgent.
  • Click on Force Stop.
  • Go to storage and clear its cache memory.
  • And then restart the phone.

This simple workaround has helped many fix the “DiagMonAgent has Stopped” issue. If the issue persists then there is one permanent solution; Uninstalling DiagMonAgent. We will provide you with more details on it later in this article.

2. DiagMonAgent Sending Report Notification

As we said above, DiagMonAgent sends diagnostic reports to Samsung that help them apply permanent fixes to app issues. Well, whenever DiagMonAgent sends a diagnostic report to Samsung that it usually does once we turn on WiFi, we can actually see it on the notification bar with the message “DiagMonAgent sending report”. The notification barely causes any issues but it can become annoying at some point.

How to Stop DiagMonAgent from Sending Diagnostic Report

If you don’t want DiagMonAgent to send any diagnostic report to Samsung, you can try force-stopping it via the app settings interface.

  • Go to settings>Apps.
  • Find DiagMonAgent and click on it.
  • After that, click on Force Stop.

This can temporarily stop the DiagMonAgent from sending the diagnostic report or at least till the next phone reboot. For a permanent solution, you will need to uninstall it or use Package Disabler Pro to disable it on your phone. Let us provide more details on that.

Read Also: What is CIDManager? Fix New Service Provider Notification

How to Get Rid of DiagMonAgent?

If you are getting annoyed by the DiagMonAgent notifications or you often getting DiagMonAgent has stopped message, you can get rid of it safely. There are two popular ways to shut up the DiagMonAgent application on your Samsung phone.

1. Use Package Disabler Cloud

Disable DiagMonAgent

Package Disabler Cloud is made for Samsung smartphones that enable users to easily disable system apps or packages. The app requires no root permission but it is also not free to use. You will need to pay $4 to purchase a subscription. After that, you will be able to safely disable any system app on your Samsung phone. Also, Package Disabler Cloud allows re-enabling disabled packages.

That means this is the safest method to get rid of DiagMonAgent. However, you can see if your phone works fine after disabling DiagMonAgent. If it does then you can keep it disabled otherwise you can re-enable it to get back to normal. Here are steps to use Package Disabler Cloud to disable DiagMonAgent.

  1. First, download & install Package Disabler Cloud (Samsung).
  2. Launch it from the app drawer.
  3. Allow permissions it asks for.
  4. From the list of packages showing, find DiagMonAgent.
  5. After that, click on it.
  6. Then click Disable.
  7. Done.

This will disable the DiagMonAgent on your Samsung phone. Note that Package Disabler Cloud uses the Device Administrator permission, it doesn’t require root permission.

2. Uninstall DiagMonAgent from the Phone

Uninstalling DiagMonAgent from the phone is another way to get rid of it. We can use apps like System app remover that allow uninstalling any system app from the phone. But this method requires root permission. Hence, make sure your phone is rooted. Here are the steps to uninstall DiagMonAgent.

  1. Download & Install System app remover from Play Store.
  2. Once installed, open it.
  3. Grant root access when asked.
  4. Locate the DiagMonAgent package.
  5. Once found, click on that to select.
  6. Click Uninstall button.
  7. Click Yes to confirm.
  8. Done.

This will permanently uninstall DiagMonAgent from your phone. So, please be sure about your decision before clicking the confirm uninstall button.

Read More: What is ConfigAPK? Is it Safe to Uninstall from Android?


DiagMonAgent is a harmless system app that comes with the Lollipop update for Samsung phones. Its file size is less than 2Mb and barely consumes resources on the phone. It is known to run in the background and sends diagnostic reports from time to time to Samsung once the user turns WiFi on. While it is totally safe, its behavior can interrupt you when you are in the middle of something. Especially, the “DiagMonAgent has Stopped” issue.

In that matter, you can either use Package Disabler Cloud to disable the DiagMonAgent or choose to uninstall it completely with the help of System app remover. Before doing these, you can also try force-stopping it and clearing the memory cache.

So, that’s it. Hopefully, you are now aware of DiagMonAgent and how to solve the DiagMonAgent stopped message. If there is still anything you want to know, the comment section below is open for you.

I love exploring numerous Android apps & games and writing about them on Rogtechs. I believe nothing is more fascinating than seeing apps with rich features making user life easier.

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