To a large extent, this makes sense. (Also, the capacity for self-delusion in BB and Symbian fans knows no bounds.) That said, a couple of counter-points:
1. Android is the fastest-growing smartphone platform on Vodacom, by a ridiculously huge margin. Admittedly it's growing from a small baseline, so in real terms its market penetration is nowhere near Blackberry, but still worth considering.
2. "Android" might not be a popular or recognised brand in SA (the majority of South Africans have no idea what "Android" even is), but that doesn't mean they're not buying it. In general, South Africans just think that buying an Android means you're buying a "Galaxy". When people ask me type of phone my Nexus is, I just tell them it's a Galaxy (which is technically true) and they generally understand and are impressed. Their reaction suggests that this is a known and desirable brand.
3. Even if the iPhone is more desirable, there are at least a some people who would
prefer to have a Galaxy. By blatantly shortchanging them, Cell C is effectively encouraging those customers to go to other networks, eg. Vodacom where they
can at least get 250mb of data per month, which is much better than the lame 50mb offered by Cell C. It is not in Cell C's interest to chase these customers away.
Bookmarks