Citi has done an excellent Research comparing the affordability of Mobile Services which essentially compares Local Price of Mac Burger Vs How Much Talk Time Can be Bought at the Same Price on Wireless Network ? Here is the summary of findings,

Country / Price of a La Carte Burger in USD / No of Minutes
  1. India / 1.7 / 148 mins
  2. Hong Kong / 2.1 / 372 mins
  3. Malaysia / 2.3 / 32 mins
  4. Philippines / 2.5 / 121 mins
  5. Taiwan / 2.5 / 18 mins
  6. Thailand / 2.5 / 75 mins
  7. China / 2.6 / 116 mins
  8. Indonesia / 2.7 / 240 mins
  9. Singapore / 3.9 / 35 mins
  10. Japan / 4.1 / 19 mins
  11. Australia / 5.1 / 63 mins

So Why is this Study Important ?
Markets which have relatively high affordability levels relative to our benchmark meal cost (i.e. more minutes per equivalent unit) may have room to raise rates.