Connection Problem or Invalid MMI Code – What To Do

Connection Problem or Invalid MMI Code – What To Do

Hey there! Have you ever encountered a connection problem or seen the dreaded “Invalid MMI Code” message on your phone? It can be quite perplexing, I know. But don’t worry, I’ve got you covered. Let’s dive into what this means and what you can do about it.

So, what exactly is a connection problem? Well, it’s when your phone is having trouble connecting to the network. This can happen for various reasons – maybe you’re in an area with weak signal, or there’s an issue with your network provider. When a connection problem arises, it can result in a frustrating experience, like dropped calls or slow internet.

Now, let’s talk about the infamous “Invalid MMI Code” message. MMI stands for Man-Machine Interface, and these codes are used by your phone to communicate with your network provider. When you enter a specific code, like *#06# to check your IMEI number, your phone sends that code to the network provider to execute a certain function. However, if the network provider doesn’t recognize or support that code, you’ll see the “Invalid MMI Code” message. It’s like speaking a language the other person doesn’t understand.

Alright, now that we know what these issues are, let’s focus on solutions. When dealing with a connection problem, the first thing you can try is to move to an area with better signal, like near a window or outside. If that doesn’t work, you can enable Airplane Mode for a few seconds and then turn it off. This action acts as a mini-reboot for your phone’s connection, often resolving minor issues.

Now, when it comes to the “Invalid MMI Code” message, there are a few things you can try. First, make sure you entered the code correctly. Sometimes, a simple typos can cause this error. If you’re certain you entered it correctly, then the code itself might be the issue. In that case, you can try searching for an alternative code that achieves the same function. There’s usually more than one way to get things done!

If none of these solutions work, don’t panic just yet. Reach out to your network provider’s customer support. They’ll have the knowledge and tools to assist you further and get you back on track.

Remember, connection problems and the “Invalid MMI Code” message can be frustrating, but they are usually solvable. By following these tips, you’ll be well-equipped to tackle these issues like a pro. Stay connected, my friend!

Connection Problem or Invalid MMI Code - What To Do

It’s been years since cellphones, particularly Android smartphones, started supporting two SIM cards that work simultaneously. But it turns out this feature can cause some trouble, which is where the “Connection problem or invalid MMI code” message comes into play. Let’s dive in and learn what exactly an MMI code is, what causes this problem, and how you can fix it.

The Root of the Issue

To put it simply, an MMI (Man-Machine Interface) code is a number you dial on your mobile phone that begins with an asterisk (*) and ends with a hash (#). These codes are typically used to check our account balance or carry out any actions provided by our SIM service provider.

Smartphone dial

The problem I’m talking about usually happens when there’s a weak or no mobile network connection. It can stop you from making phone calls or sending text messages. But there’s another reason why you might get the “invalid MMI code” message – problems with SIM card authentication. This can happen if you have two SIM cards that interfere with each other.


Restart Your Device

Just like with other Android issues, sometimes a simple phone restart can fix the problem. It’s the first thing you should try, as it might solve the problem right away.

Disable Your SIM Card

Since having two SIM cards can cause this issue, it’s a good idea to try disabling one of them.

Now, not all Android smartphones have the same steps, but here’s how you can generally do it:

  1. Go to Settings.
  2. Look for “Dual SIM settings” or a similar option related to SIM cards.
  3. Here, you might find a section for enabled/disabled SIM cards, or individual settings for each SIM card.
  4. Disable the SIM card you don’t need right now. If your phone asks for confirmation, go ahead and confirm.

Enter Safe Mode

Android’s safe mode is like the computer version. It lets you see if your phone works well with only the most important apps. This can help you figure out if a recently installed app is causing the “Connection problem or invalid MMI code” error message, because you can still dial the code you were trying to reach. Here’s how you can turn on safe mode:

  1. Press and hold the “Power” button until the Power menu appears.
  2. Turn off your phone.
  3. Wait a few moments, then turn it back on while holding both volume buttons. On some models, the sequence might be a bit different.
  4. When your phone begins to boot up, you can let go of the buttons. You should see “Safe mode” written in the bottom-left corner of the screen.
  5. In safe mode, you can still dial the MMI code number to see if it works. If it does, it’s likely that an app is causing the issues. You might want to find and delete that app. If it doesn’t work, try another method.
  6. When you’re done, restart your phone normally to exit safe mode.

If you can’t enter safe mode this way, try one of the other methods depending on your device. Here’s one for older devices:

Safe mode

  1. To start, press and hold the “Power” button until you see the Power menu.
  2. Instead of turning off your phone, tap and hold “Power off” for a few seconds. A pop-up window will appear, asking if you want to go to safe mode.
  3. Tap “OK” to confirm and wait for your Android device to reboot.
  4. Now, try dialing the code that was giving you trouble. This will help determine if a certain app is causing the error message. If it is, consider deleting that app.
  5. Once you’re done, reboot your phone to exit safe mode.

Add a Character

If the problem is just with an invalid MMI code, you can try adding extra characters like commas and pluses. This can force the execution of the operation you’re trying to perform, bypassing any errors.

  1. One way to add a character is by inserting a comma (,) at the end of the code. For example, if the MMI code is 1234, it would look like “*1234#,”. You can omit the period since it’s only there for grammar purposes.
  2. Another option is to add a plus (+) after the asterisk, making the MMI code “*+1234#.”

Change the Testing Menu Settings

The Testing menu can often provide a solution for this type of problem. Follow these steps:

  1. On your phone, dial *#*#4636#*#*. Don’t worry, this won’t be considered a phone call.
  2. If entered correctly, you will instantly be taken to the Testing menu. From there, select “Phone information” or “Device information.”
    Testing menu
  3. Tap “Run ping test.”
    Phone information
  4. Scroll down until you find the “Turn off radio” and “Enable SMS over IMS” buttons.
    Turn off radio
  5. Tap “Turn off radio.”
  6. Tap “Enable SMS over IMS.”
  7. Restart your device and see if this resolves the problem.

Check the Selected Network Operator

It’s also possible that you’re not connected to your service provider’s network for some reason. To check this and select the correct network, follow these steps:

  1. Go to “Settings.”
  2. Navigate to “Network Connection” or a similar menu.
  3. Select “Mobile Networks.”
  4. Tap “Network Operators” and wait for your phone to search for available networks. Choose the one that belongs to your service provider.
  5. Wait for your phone to establish a connection with the selected network.
  6. If the problem persists, try connecting again several more times.

Staying Connected

This issue can be challenging to resolve because it’s important to determine if the problem lies with your connection or if something is preventing SIM card-related actions. Try these methods and hopefully you’ll identify the cause and find a solution.

Have you encountered this message before? Did it go away on its own or did you have to troubleshoot? Share your experiences with us in the comments below!

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