Solution for " Connection Problem or Invalid MMI Code "
- Thread starter Heavens_King
- Start date
Good day all, I have a Lenovo K910 with Dual SIMM slots. When trying to dial any MMI codes (*125# etc.) the phone will work perfectly on the first SIMM but will return an error (simply has a menu button saying OK) or if I use a comma I receive 'Connection problem or invalid MMI'.
Any help would be greatly appreciated.
Any help would be greatly appreciated.
Last edited:
I use fonepad 7 dual sim and also having invalid mmi problem. here's how I solve it.
if I set data service network to sim 1 then I can use ussd command with sim 1 while ussd command with sim 2 will cause invalid mmi, and vice versa.
if this indeed solve anyone else invalid mmi problem please let us know.
if I set data service network to sim 1 then I can use ussd command with sim 1 while ussd command with sim 2 will cause invalid mmi, and vice versa.
if this indeed solve anyone else invalid mmi problem please let us know.
FDN solution
I know last post was long time ago, but I've found the solution. Probably all of you have enterprise phones or something like that. All you have to do is enable FDN with you PIN2. In this Samsung webpage it is well explained for one single phone: samsung.com/us/support/faq/FAQ00037731/37899
FDN is the acronym for Fixed Dial Number and yes, as you can imagine, all those codes are FDNs.
Basically, these are the steps:
I know last post was long time ago, but I've found the solution. Probably all of you have enterprise phones or something like that. All you have to do is enable FDN with you PIN2. In this Samsung webpage it is well explained for one single phone: samsung.com/us/support/faq/FAQ00037731/37899
FDN is the acronym for Fixed Dial Number and yes, as you can imagine, all those codes are FDNs.
Basically, these are the steps:
- Open the phone app
- Open the menu and go to the dialer settings
- Go to advanced settings
- Select "Enable FDN"
HI I am using miui 2 .I am from Bangladesh
I have a mi 2 and I bough a new Sim Card, when I tried to check my balance by typing *778# I got this error message :
"Connection problem or invalid MMI code"
.3G LTE network problem .How to solve this problem ?
I have a mi 2 and I bough a new Sim Card, when I tried to check my balance by typing *778# I got this error message :
"Connection problem or invalid MMI code"
.3G LTE network problem .How to solve this problem ?
Last edited:
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10Hi Guys,
i have came across the problem of not being able to execute the basic detail commands provided by the operators to check the details.
however i had the same problem and this is what worked for me
just add an comma (,) at the end of the code.
for example,
if your code is *123*1#
then you should dial it as *123*1#,
this way i think it blocks the rest of the codes going with it and works properly
this worked for me check for yours
If it helps please say "thanks"
Regards,
HK2How to put " , "
HEY
you should tap at the end , on menu button and choose (ADD 2 - SEC PAUSE).
GOOD LUCK,
gorbesia2FDN solution
I know last post was long time ago, but I've found the solution. Probably all of you have enterprise phones or something like that. All you have to do is enable FDN with you PIN2. In this Samsung webpage it is well explained for one single phone: samsung.com/us/support/faq/FAQ00037731/37899
FDN is the acronym for Fixed Dial Number and yes, as you can imagine, all those codes are FDNs.
Basically, these are the steps:
- Open the phone app
- Open the menu and go to the dialer settings
- Go to advanced settings
- Select "Enable FDN"
11
