Datasheet

SIM Connector (on Back)

A 2G Mini SIM card is required to use the module. Nearly any cell phone shop can sell you a SIM card. It must be a 2G

GSM card. AT&T in the US does not sell these anymore! They are shutting down their GSM network, and only T-mobile

sells and supports a GSM network. If you are in another country, chances are you can just ask for a GSM 2G card. For

USA customers, we have a known-working TING SIM card which has a great billing system and works very

well! (https://adafru.it/fbO)

MicroSIMs won't fit - so make sure its a "Mini" SIM. Mini SIMs are 1" x 0.6" / 25mm x 15mm. These are by far the most

common size.

Most cards come with a voice and/or data plan. If you want to make phone calls and SMS's you'll need a voice plan. If

you want to transmit data like fetching a webpage, you'll need a data plan.