iam facing the same problem…”connection problem invalid mmi code..and iam also not able to make call” i dont know the exact reason for it..but i think it may be due to some application which you installed..just do restore factory setting after that restart your phone once..it will ...
A notification stating “Connection trouble or invalid MMI code” appears on occasion, which might be annoying for Android users. When the invalid MMI code notification occurs, it usually implies that you won’t be able to make calls or send texts until the problem is fixed. This usually happ...
Toggle the airplane mode:Turning airplane mode on and off is an effective way to refresh your phone’s network connections. If you are getting the “Connection problem or invalid MMI code” only due to a network glitch, toggling the airplane mode should help. Insert a comma at the end of ...
On Mac Step 1:Click the time indicator in the menu bar and selectOpen Date & Time Preferences. Step 2:Under Date & Time, check the box forSet date and time automatically. Then, use the drop-down menu to select the preferred time server. Fix 2: Clear Cache and Cookies If you face t...
Prefix code (MMI) A simple and effective way to fix a connection problem or invalid MMI code on an Huawei phone is to add a comma at the end of the Prefix code. For example: If your Prefix code is*2904*7#then adding the comma at the end would do just the trick, which will look...
2.Prefix code Another simple and effective way to fix a connection problem orinvalid MMI codeon an Android phone is to add a comma at the end of the Prefix code. For example: If yourPrefix code is *2904*7#then adding the comma at the end would do just the trick, which will look ...
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
Try Basic Fixes Toggle offline mode in Spotify:Sometimes, when you disable the offline mode in Spotify, the app may show the “No internet connection available” error and become stuck. In most cases, you can fix the problem by toggling the offline mode. To do that, open Spotify’s settin...