Oh, and for weather
forecasts, and other reasons to access the www: We got a data only SIM card from Movistar in Panama. unlimited data (on the device, can not be used as hotspot) costs $5/week. Scratch cards for refill can be bought all over Panama.
Movistar has a program "sin fronteras", and you can get data at no additional cost all the way to Mexico
, whenever you are in reach of a cell tower.
To recharge the movistar with a new scratch card, outside of Panama, dial *888# (not *312code as it says on the scratch card).