A Android Question Guest Mar 14, 2014 #1 unable to check balance on MTN sim with the error msg"connection error or MMI code error"
Rukbat Extreme Android User Mar 15, 2014 #2 The MMI code is the code you use to check the balance - #BAL# would be an MMI code. If you're dialing it right, the error is on their end.
The MMI code is the code you use to check the balance - #BAL# would be an MMI code. If you're dialing it right, the error is on their end.
