There are two parts the user must have control on it but they aren't available in the current interface:
1. How long the DTMF tone last, short/long/or even better: custom
This is required to deal with some old IVR systems which doesn't recognize short DTMF
2. Switching from SMS to MMS. Doesn't matter how long the SMS I should be able to disable the auto-switching. It's annoying that I need tosplit the message by myself to acoid this change
DTMF is the standard tone sent when call an IVR. For example a bank or hospital or government entity The problem, SAMSUNG had an option to switch between short and long tones a while ago, now the option is no longer exists and it's short by default. So when I call Riyadh municipality for example, the IVR doesn't recognize any number I press
As for your suggestion to enable the chat feature, it's already enabled and it's irrelevant. I should be able to choose whether to switch to MMS or not. The current situation, when the SMS length exceeds certain number of characters it converted to MMS and I have no choice to return it back. I have scenarios when I need to send long SMS as SMS, not MMS
