Coverage Maps

We use an international 2G m2m/iOT Sim Card.  You do not have to use a specific carrier for you personal cell service.  You can use (Verizon, T-Mobile, AT&T, Sprint, Cricket, Boost, MetroPCS, or Any internet Wifi or Hotspot)

USA 

http://maps.t-mobile.com/pcc.html?map=mvno-roamd-2

CANADA

https://www.rogers.com/consumer/wireless/network-coverage 

MEXICO

http://www.sensorly.com/map/2G-3G/MX/Mexico/Telcel/gsm_334020#|coverage