I am doing a project for sending bulk sms service.this is the concept
create a website . Through this website the user will enter all their details so that only registered user can use my service.I ll get a service plan from any of the service providers for sending unlimited messages.They ll give me a SIM card with a unique number like 54545.My android application interfaces with the gsm modem and sends out the messages from my machine. now,i wanted to know what kind of modem i can use for my project.Is there any modem to send only bulk sms
