Connection Problem or Invalid MMI Code: 6 Ways How To Fix Connection Problem or Invalid MMI Code – Most of the times, it can happen when you check your account balance, you may see Connection Problem or Invalid MMI Code. This can happen when you recharge or top up your mobile phone for an amount or when you are trying to run a USSD code.
The reason for this issue can be varied as the service providers and location of different mobile phones are different. However, you can notice that the issue of Connection Problem or Invalid MMI Code happens mostly when you have a dual SIM card option on your phone or when you have a Smartphone.
Now, shall we have a look at the solutions that help us to resolve this issue?
This is one of the easiest and effective solutions that you can try yourself. You just need to delete any app that shows you the MMI code error. However, this may not be practical when you see a couple of apps are showing the same MMI code error. In this case, you can go to safe mode to prevent
Connection Problem or Invalid MMI Code. Your mobile safe mode is same as system safe mode. It prevents from loading any app to your mobile phone and also restricts any preinstalled app to get enabled in your mobile phone.
Add coma after Prefix Code
Yes, this is another simple way to prevent your phone from showing Connection Problem or Invalid MMI Code.
Suppose your prefix code is *3423*5#
If you simply add a comma after your prefix code, it will look like this: :*3423*5#,
Or you can also add any symbol after *
If you are doing any of this way, the operation will overlook if any error is there. This will help in preventing any connection problem or Invalid MMI code
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Activate Radio and Turn on IMS over SMS
In order to fix the issue of Connection Problem or Invalid MMI Code, you can try with easy tip for your Samsung Galaxy devices. All you need to do is to simply give your device information mode and after that activate Radio and Turn on IMS over SMS.
To provide the device information mode, you need to dial *#*#4636#*#*, then go to Phone information. Here you need to run a ping test. This can be done by turn on and off the Radio. After you are done with the ping test, you can turn on SMS instead of IMS. Once you are done with these steps, you can reboot the device and see if it works fine now and the issue of Connection Problem or Invalid MMI Code is resolved.
Check network connection
If the problem of Connection Problem or Invalid MMI Code persists, you can check your network settings and see if there are no network connectivity issues. For this, you need to go to settings, tap on a network connection, and then click on mobile networks –Network operator.
You can select your network service provider her and see if the issue is resolved. You may give several attempts in the same way to fix the issue.
Restart your device
This is another simple way of fixing Connection Problem or Invalid MMI Code. You can try restarting your phone several times to see if the issue is resolved. If your mobile is in the navigation settings, you can try holding power and home button to turn off your mobile. Once, it is turned off, turn it on and see if the issue is fixed.
This is another effective way of fixing the issue of Connection Problem or Invalid MMI Code. For this, you need to go to settings and tap on the network connection. There you have to search for your mobile networks and network operators. Choose your network supported by your service provider from the available network. For this, you can select your service provider and see the available networks. Choose one network operator. Now you can check whether the issue is resolved. It may sometimes take 4-5 attempts to resolve the issue of Connection Problem or Invalid MMI Code