I noticed the comments above are quite old but still give it a go. I have just installed sakis3g and followed all the steps necessary for connecting a SIM800 board to my Raspberry Pi2B. When I run sakis3g to connect to network I press Connect 3G, then Custom tty but I do not get a list of APNs. I am on Three UK, put that in with/without UK but no luck.I can't seem to get connected, this is the steps that prevents me from connecting. Any ideas? Thanks in advance.