New answers tagged gsm
0
The GSM module can estimate it's location based on cell tower triangulation but if you want a more accurate location then you need to use a GPS.
2
It might work but you'd be better off getting a 2G dedicated card. Hologram.io has a developer card that is $5 and free 1MB / month or something.
0
Definitely related to poor antenna matching. This is complex stuff and should preferably be fixed by changing antenna matching (e.g. by a matching circuit or simply trying out a different antenna). I have also seen that it helps to wait until you get the unsolicited modem response "Call Ready". Until you get this message, it can disturb the modem to receive ...
Top 50 recent answers are included
