Flutter: Better approach for sending bulk SMS without user interaction on Android
问题 In our project, we need to send bulk SMS to our entire customer list (around 200 users in the list), for their monthly dues. We will: send first sms to all users second sms to pending payment users final third message to remaining users We can't use SMS Gateway with API, because the internet is not reliable in the area where this app will be used so we wanted to use SIM for the SMS. Questions: How can we send SMS without user interaction? How we can prompt for SIM selection? (dual sim mobile)