Happy to discuss further if you care to. Helped build out cellular networks in less developed countries (LA) in my younger days and we looked at these issues. I haven't been deep into it in a while, but issues of high cost in these markets was as often as not a function of monopoly or other protectionism (i.e. there was often a government backed incumbent carrier or other government fees/tariffs/taxes that inflated end-user costs). So maximizing the content/bandwidth ratio was always a priority. The WAP protocol was one thing we thought would help, but it never really took off. Good times.