Use unlimited text plan

I have concerns about using my own my cell phone service to send thousands of text messages, even thaw I have unlimited texting wont the carrier complaint about the amount of test messages sent? Is it posible to get a separate sim card to use only with thye modem, instead of using the one on my cell phone?

Yes, if you over used the carrier will complain. However, we do not know the exact limit that will trigger this. You may need to read your service fine print or just talk to their customer service.

Yes, you can use a separate SIM card with the modem. When you purchase a data/text plan, separate from your regular plan, the carrier will give you a new SIM card. The SIM card simply identified who is making a call or sending a text message.