Advanced anti-theft device KM-999
https://www.slideshare.net/u8emdca661/antitheft-device-using-komax-km999-gsm-sim
Underrated Questions About Komax KM-999 GSM Using Sim Card That You Should Know About You are able to order many bundles of $19 if needed. It's possible to then purchase a data pack, although pricing will ride