¿Cómo puedo solucionar el problema del código MMI?

How can I solve MMI code problem?

Here are the steps to be followed: dial *#*#4636#*#* in the dialer>navigate to Phone Information>click on ‘Run Ping Test’>Once the ping test is performed>click on ‘Turn Off Radio’>now click on ‘Turn on IMS over SMS’. Finally, Reboot your phone. This must solve your issue.

Every code that you enter over your phones keypad that contains asterisk (*) or hash (#) characters is an MMI code. MMI stands for Man-Machine-Interface. Even though most of these MMI codes look pretty similar, they fall into different groups with completely different actions.

(Man Machine Interface code) A cellphone code that begins with a star/hash (*#) prefix. MMI codes are entered like telephone numbers to obtain a variety of information as well to enable and disable various actions. For example, entering *#06# on a GSM phone displays the model and serial number (see IMEI).

Responses

1. Dial #21#.
2. Push the Call, Send, Talk, or Receiver icon.
3. Your wireless device displays a confirmation message when Call Forwarding deactivates.

Restart the Android Device The first way to try to fix an invalid MMI code would be to restart the smartphone. Hold the Power button and the Home button at the same time until the phone turns off and starts vibrating, wait for it to restart.

Dial *#21# and press Call shows the status of call forwarding for voice, data, fax, sms, sync, async, packet access, and pad access call forwarding enabled or disabled. Dial *#61# and tap Call to show the number for voice call forwarding when a call is unanswered.

Connection problem
For Android users sometimes a message saying “Connection problem or invalid mmi code” shows up and can be a frustrating thing to deal with. When the invalid MMI code message is shown, it generally means that calls or text messages can’t be sent until this issue has been fixed.

Every now and then, you may run into the Connection Problem or Invalid MMI Code pop up error on your Android device. This generally happens when a user is trying to send an Man-Machine-Interface code, aka MMI code. What is a MMI code you ask?

MMI codes or Man-Machine Codes, are special codes you dial on your phone to communicate with your phone, SIM, or with your service provider’s network operator computers. By dialing MMI codes on your phone you will be able to obtain valuable data or change phone/ sim settings you can’t access through the phone’s user interface.

While different country cell phone providers vary, Invalid MMI Code error is found on mostly dual Sim smartphones, such as the Samsung galaxy S Duos. I am listing this solution first because users had less attention to this, yet it is the simplest and most effective one.

Press and hold the power button to turn on, continue holding the power button until the logo screen appears. Release the power button once you see the logo. Press and hold the volume down button until the reboot is finished.