I'm do the following request,
+CUSD: 1,"1-Change Tariff
8-Data Settings & WiFi Calling
+CUSD: 1,"Available Balances:
Then I don't get an OK response. This then makes the following USSD call useless, as the documentation says that you need to wait for a OK prompt before continuing. So I need to manually enter a few times to get a OK response, but then when I try to run the following command, I get the following output.
+CME ERROR: no network service
Another symptom, when wait for a OK response with out any terminal interaction, it seems the module reboots as all my previous settings are reset to start up defaults. As I am unable to interact with the device via the terminal, until I it is ready.
In contrast to a Leon-G100, I can advance in the menu with out any issues. (this is a different sim and shortcode, but the ussd from the mno is not the issue, have tried it with multiple sims)
+CUSD: 1,"1) Balances
5) Just 4 You
6) Play/Shake Every Day
7) NXT LVL
9) Advance & Transfers
+CUSD: 1,"1) Summary
+CUSD: 1,"Airtime is R55.31; data is 0.00 MB; Night Owl 0.00 MB; 0 SMS's;
Buy more Airtime using debit/credit card Reply 1 ",15
You can clearly see I get OK responses after each +CUSD output, now why would the GT350 not do that?