Great little device for when you are in remote places without mobile reception. I used this every day when I crossed the Atlantic Ocean on my 35ft sailboat to get weather and message home. Even phoned home a couple of times with the Satellite voice calling feature through the app on my phone. You can either get an iridium sim card or a PredictWind one which is great for downloading weather updates to your phone or iPad. Note: SIM not included Includes and aerial, but I didn't need it. Just open the antenna with view of open sky and it works like a charm.
eBay