Can I use the SIM card from my phone in the Pinnacle 100?

No, the Pinnacle 100 and the MG100 are LTE Cat-M1 or NB-IoT modems which require their own SIM card and are not compatible with the network your mobile phone uses. Customers need to source SIMs specifically for LTE Cat-M1 or NB-IoT networks through the carriers directly or through an MVNO.