Sim7100a for raspberry pi as modem

Hi, I have sim7100a development board. I want to use it for raspb pi mainly as modem for raspb pi connection to internet, also I want use gps, but Im begginer with SIM chips. Question for good modem speed I should use spi or i2c or usb to connect this sim chip to raspb pi? Also theres not much documentation for raspberry sim7100, I know that some other sim chips work simillar, maybe I can use other model docs?

Hi , I guess this is Deividas ? We discussed on Whatsapp?