You raise two interesting points which phone manufacturers (Apple in particular) should learn if they know what's good for them.
Firstly, the killer app for a mobile is still communications. If a smartphone doesn't do messaging and voice calls effectively then it's market potential is limited.
Secondly, "non-western countries" arguably amounts to several billion people, whereas "western countries" perhaps does not. So phones meeting the needs of the majority have greater market potential than those that don't.
So does that mean that Blackberry have actually got it right from a worldwide marketing point of view? Despite their outage a few weeks back they remain the benchmark against which others are measured when it comes to messaging.
Have Apple, by focusing on the apparent needs of a comparatively few app crazed incommunicative Westerners missed out on the wider world wide market where battery life, voice and messaging are the prime selling points? The reported problems with battery life and iCloud bugs don't exactly commend iPhones to those who can't charge up every day / mealtime / hour (as the trend would appear to be) and want to call or text their mates.
Will Android manage to appeal in these emerging smartphone markets? Clearly yes because local manufacturers can tailor it for local non-google services (almost certainly not what Google intended) for local people, as has happened in China. But that results in more Android fragmentation.
Time will tell I guess. If Indonesians are heading towards being Crackberry Addicts that could indicate that Apple and Android are reaching the limits of their world wide market potential. Given RIM's low share price, does that make their stock worth a punt?