Hi bsnqt,
it's phoneSMS, and my app receives the GENERIC_FAILURE error. If the user uses the normal SMS app of his device, he can send SMS to the same phone numbers successfully.
But I guess I found the problem. The user is in France and he's using french words like août (= august) with special characters.
It seems that if you're using such special characters in the SMS text, the maximum SMS size is reduced from 160 characters to only 70. And the text size he wants to send is 140 characters. So I'm getting the failure.
I have now to figure out how to strip out all the special characters before sending...
Best regards,
Carsten