Where is this magical market that has an iPhone AND Android tablet? I would wager that ihat is a pretty rare user, and even rarer to be using the same native apps on both.
Do you want to advocate that everybody buys a single brand?
Or do you want competition in the smartphone space?
You know, where people can freely move from one brand to another if they don't like certain aspects of their current brand? Like how the free market is supposed to work?