None of these things play any role for the iPhone market share.
Far more relevant are:
- cheaper low-end models, iPhone Nano (not that likely)
- dropping provider exclusiveness (very likely, already happening: UK, Canada, more to come)
Analysts keep forgetting that Apple doesn't care that much about market share of sold handsets, but more about market share of profit. Thus, it could very well be that Android overtakes iPhone in a few years, given that manufacturers offer cheap phones running Android. If these phones are any good or if they generate much profit: I highly doubt it.
generally speaking, a company that only makes software (google) has higher profit margins compared to a company that makes hardware and software..(apple)
and it seems like it's possible for google to take over, as they will sell to any phone manufacturer, but apple is stuck with only one device..
now if it's going to be a better phone, thats a different story, this is just market share, and profits..