According to some google analytic of mobile operation system, iOS & Android is the most use than other mobile operations now for Internet browsing. Both operating systems are keeping competing each other around the globe even Cambodia, a small country. Yesterday, iOS announced iOS 6 and recently few months ago, Android announced its JB (Jelly Bean), version 4.1.
See two examples of two website below via images:
Of course, both websites might have different target visitors but it still show that people in Cambodia are using more smart phones or tablet of both OS: iOS & Android.