Show If you are an Android smartphone user, many times you have come across a message like 'Connection problem or invalid MMI Code' on dailing a USSD code. It's a serious problem which affects the phones resulting in imposing some restrictions while sending and receiving text messages and calls, checking account balance, recharging mobile number and so on. SEE ALSO: Diwali Offers: Top 10 Mid-range Smartphones Worth Buying Though the error is generally seen in the dual SIM mobile phones, it may sometimes also occurs in single SIM phones. It mostly occurs either due to issues with the carrier or because of SIM authentication problems. SEE ALSO: Snapdragon 653, 626, and 427 Unveiled: Brings 8GB RAM, Dual Camera Support To Mid-Range Smartphones To get rid out of this issue, we are 5 effective yet simple methods which will solve the 'Connection Problem or Invalid MMI Code' problem. Click Here for New Android Smartphones Best Online Deals Safe mode temporarily disables all pre-installed applications and services that came with the phone. It helps to find out the culprit app that may be interfering with the network operation of the phone. To enter Safe Mode, turn off the phone and hold the power button. While holding the power button, keep tapping on the menu button until you see the safe mode option at the bottom left of the screen. Click Here for New Smartphones Best Online Deals An alternative way to solve your connection problem is quite simple. You just need to add a comma (,) at the end of the prefix code (*135#). This addition forces the operation to look for the error. You can also add '+' (plus) after your prefix code. It also works the same way like a comma. This is another way to solve connection issue. In this method, you need to enter the information mode and activate radio to turn on IMS over SMS. 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. Click Here for New Android Smartphones Best Online Deals Simply turn your phone on and navigate to network settings. Then hold the power and the home button together until your phone turns off. Then turn it back on. Navigate to Settings>Network Connection>Mobile Networks>Network Operators. You will see available networks list. From there select your service provider and repeat the process 4-5 times until it actually starts working again. Click Here for New Smartphones Best Online Deals
Moto G62 5G Review: Upgraded Features In A Familiar Formfactor
Every New Feature In The Apple iOS 16 Beta 3 Update
How To Check Live Train Running Status & PNR Status On Paytm
Android 13 Update: List Of Eligible Pixel Devices, Top Features
iPad Production Likely Hit By Major Power Outage In China
Any code that you enter in your phone keypad starting with * (asterisk) and ending with # (hash) can be called an MMI code. MMI stands for Man Machine Interface. These MMI codes are assigned various commands from recharging your phone balance to checking your IMEI number. Although all these MMI codes look similar, they are primarily of the following types:
Also if a code like *20*12345# and *21*12345# is used, the first one will be sent to the network provider as it is an unrecognized code by the phone MMI parser, but the later code will be used in call forwarding. Please note that for both SS and USSD codes, the user needs to press the SEND button after entering the code, as it isn’t possible to execute the code automatically.
There have been a lot of complaints from Android users saying that they are facing Invalid MMI Code messages. Such reports have been very popular among users having Samsung Galaxy Phones. These errors are encountered when checking your account balance or topping up or recharging or any other tasks which involved using the *# commands (star hash) on your phone. While cell phones from a different country may vary, in general, Invalid MMI error codes are encountered mainly while using dual SIM smartphones. How to Fix Connection Problem Or Invalid MMI CodeListed below are a few simple methods which any user can use to resolve the Invalid MMI code error. Method 1: App DisablingThis is one of the easiest and the most effective method of correcting this error. Often at times there has been a certain app installed by the user responsible for creating this error. The simple correction can be to delete the app or rather uninstall this app. If you are not able to determine if it is a problem caused by a certain app, then you can log on to safe mode on your phone and follow the next steps. Log into safe mode:
Now test if it is a problem caused by any app:
It is always recommended to take a data backup and then format your phone to do a fresh install. Method 2: Add a Comma(,) or Plus(+) Symbol to the NumberAnother simple way to get rid of the Connection Problem or Invalid MMI code error on any Android phone is by using either a comma or a positive sign along with the code. For example: With an MMI code like *123*4# the user can simply rewrite it as *123*4#, or using a positive sign before the code like *+123*4#. Using a comma forces the operation to be executed overlooking any error that is encountered on the way. Method 3: Turning on SMS over IMSTo fix Invalid MMI Code error on any Samsung Galaxy phone, this method is quite simple as well as it required the user to simply enter into device information mode and subsequently activate Radio to Turn on IMS over SMS. Steps to enter information mode:
Once this setting is turned off, SMS is sent or received via the circuit switched connection. Reboot the device after all these. Method 4: Restart Phone Multiple TimesRestart the phone multiple times can do the trick. Or turn on the phone, go to network settings and then restart phone again. Restarting multiple times clears up the RAM and the memory of the phone which is often responsible for the error. Method 5: Selecting Proper Network ProviderGo into phone settings and navigate to network connections. Go into Mobile network and perform a network operators search. Select any recommended service provider, then check the MMI code if it’s still working or not. Usually, this method takes 4-5 attempts before starting to work properly. Finally, if nothing works, contact the service provider. And let them know about the issue, it can always be an error at their end. These are the very easy, effective and best method for solving and fixing this ‘Connection Problem or Invalid MMI Code’ Problem. Hope you will learn and liked this post. |