Best i can tell, it is for cost reasons. Non-phone GSM devices are widely operated because of low cost and low data speed needs (most of them just ping a SMS i

Best i can tell, it is for cost reasons. Non-phone GSM devices are widely operated because of low cost and low data speed needs (most of them just ping a SMS in some direction or other). UMTS deployments are more likely to be for bandwidth needs, and thus more likely to have moved to LTE setups already.