Awesome module. Better than the 4G USB dongles, if used with a PC (NDIS Eth adapter, no driver needed, no APN configuration). Good band coverage. And for using with 'duino or the like, it has a level shifter that translates serial from 1.8v to higher voltage (looks to be 3.3v, still have to check). Also the technology selection worked like a charm (i.e. 4G only versus 4G with 3G/2G fallback).... Arrived quickly, just didn't have time to test every functionality, but this is a great module, good signal with the antenna that was included.
Reached too late, may be due to issue with customs, also looking for pinout document