Our new GSM 4 click is out and it has a module with a really pretty old-fashioned name - SARA-G3. But everything else about it is brand new.
Just add a SIM card, an antenna and a headset to this click and you will be able to send and receive calls (and SMS and data). It also has a USB port so you can connect it to your PC and use it as a standalone device.
The module has quad-band coverage, so you could use it in almost every corner of the planet. Power efficient modes make it ideal for battery powered devices.
If you want to learn something more about mobile communication networks, we have an article that explains it all in detail. For a general introduction to GSM, start from this article. Otherwise, see all the details about GSM 4 click on the product page