I can't imagine neither of them converting IOS is really smooth and has the apps, Android has top of the line phones and also has the apps.
Windows Phone can only get the people that are angry at android because they got awful phones like Galaxy Mini etc...
Most Android phones are some degree of awful. Even many of the "top of the line" phones are problematic. They've gotten better, but I know at least 3 people who bought top of the line Motorola phones in the last 2 years and had terrible experiences with them
A great start would be making every Android phone a Nexus device. That's never going to happen because Google cares more about making OEM's and carriers happy than they do about their customers.
But you're right about it not being easy to convert iOS users. I think a lot of that has to do with the iPhone being good, but it also has to do with the fact that iOS is only available on one phone from one maker. So you have a population of people who have higher than average customer satisfaction already AND they are loyal not only to a platform, but a specific device.
With Android there are 1000 devices, someone might go from a Samsung to a Motorola to an HTC, so they aren't necessarily attached to one brand or device.
Based on my admittedly unscientific anecdotal evidence, only Android fan boys actually like Android. Everyone else merely puts up with it or doesn't like it. I'd say 60% of the people I know have Android phones. Out of those only 2 of them are Android fan boys, they think Google is the second coming of Christ and are in full blown delusion. The rest just kind of say "meh" if I ask if they like their phone. They have no opinion or they have complaints. They get Androids because they think there is NO OTHER CHOICE. They think my phone is interesting or strange, I don't try to sell anyone on it though. About 1/2 of them are willing to consider an iPhone, the other 1/2 don't particularly like their Androids, but they've been convinced that the iPhone is pass? and uncool or "not good" for some reason by idiot Android friends who sell them on things the Android can do which they wind up never using anyway.
As for the iPhone users, I only know of one who doesn't like their phone and is planning on getting an Android next. The rest LIKE their phones and really aren't considering anything else.
The point is I still think Android's marketshare lead has way more to do with filling the space on the shelves than it does with actually being something great that most people like.
That means that at least some of that marketshare is up for grabs. All you have to do is show people something that sucks less than Android, which isn't that hard to do.