Looking for the pro's and cons, re WAP and SMS for transmission of simple enginering readings.
What would be the most available in 3rd world cell networks.
Can you have SMS without a WAP layer?
Could there be areas with WAP and not SMS available? Vice Versa?
Honestly, I think that it would have to do with the specific nation involved in regard to which is more common, i.e. say, a "poor" nation in Africa as opposed to a "poor" nation in Asia (a former Soviet Republic that isn't on it's feet financially yet).