What are SIM farms and why you want to avoid them
Like Google, you may think a SIM farm is an old video game (go ahead, Google it!). But when it comes to SMS messaging, a SIM farm is nothing like a fun and harmless video game. SIM in this context is referring to a subscriber identity module, or SIM card in a mobile device. Every mobile on a GSM network uses one. It contains information about the owner and mobile including number, contact lists, network authorisation.