Datasheet

Obtaining a SIM

In order to use the phone parts of FONA you will need a SIM card. Luckily, there's a phone store in every town in

America! You can get a pre-paid or post-paid SIM but we kinda like the pre-paid kind.

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.

MicroSIMs won't fit - so make sure its a "Mini" SIM. Sometimes these are just called plain "SIM" cards since the huge-

size SIMs are rarely used. Mini SIMs are 1" x 0.6" / 25mm x 15mm. these are by far the most common size.

The only thing to watch for is you need to have a 2G GSM-compatible SIM

If you have an

older

AT&T SIM it

may

work. AT&T announced in 2012 that they would shut down their 2G network

January 1, 2017. The vast majority of M2M (machine-to-machine) cellular devices use GSM, so the 5 year lead time was

to give people plenty of time to migrate from AT&T.

You can read an interesting whitepaper from Aeris about this below:

https://adafru.it/dEh

T-Mobile & TING

T-Mobile does not have any announcement that they will sunset GSM. We can't speak for them but we expect at least

5 years warning as well, probably they will never fully sunset since there's millions of machines with GSM connectivity.

In the US, AT&T no longer sells 2G SIMs! We suggest T-Mobile or T-Mobile "distributors"