There are some mistakes on the documentation SIM808_GPSApplication_Note.pdf and on the Wiki
AT+CGPSINF=0 gives the latitude BEFORE the longitude
, , , , , , , ,
the speed is in meters per seconds, not knots
How can we deal with West longitudes or South latitudes using AT+CGPSINF=0?
does the command reply negatives coordinates?, or are we supposed to use other modes like AT+CGPSINF=4 (which means that AT+CGPSINF=0 is useless)
=> We have the same problem with AT+CIPGSMLOC, no information for West longitudes or South latitudes