Forum Discussion
USSD / MMI CODES NOT WORKING
Do correct me here THOMAS-P, but my understanding is an USSD / MMI code is interpreted by the handset first; thereafter, the corresponding command is sent to the operator's network.
I've tried the *#21**11#, *#30#, and *#31# shortcodes, but none of these worked - although I've used the #31# shortcode to hide my number, on more than one occasion.
Perhaps my handset isn't generating the correct commands, or maybe the MVNO SMARTY Mobile only provide limited support for USSD / MMI codes.
Your absolutely right in this regarding your phone interprets the command,which in turn is interpreted by the mobile network.
It's making me wonder if it's just down to smartys network setup not having the support for this .
A will try and pick up a payg SIM card from a major network to test this theory
Hey THOMAS-P, I saw somewhere online a mention that USSD / MMI can be problematic when you're using a dual SIM capable handset. Could this be true?
Hopefully your experiment with a PAYG SIM will be insightful.
No joy with EE PAYG sim card on this.
Will head back to Samsung customer support, as i cant figure this out
