I originally got this module (SIM800C) with the intention to add it to WireMon app. However, I sort of got carried away testing the module
so, decided to make this small app available here. You can do some basic things with the app : Make / Answer calls, send/receive SMS, Send Email, monitor GSM network status. There is also a simple terminal mode - where you may play around with AT -commands.
Obviously this requires that you have a GSM network and a working SIM. I'm using a 5 Euro prepaid SIM for this.