I've been an Apple fanboy since the first iPhone came out in 2007. Yes, I was late to the party. If I were Samsung, I would be targeting Verizon and Sprint customers more directly instead of every single iPhone user as a whole. iPhone lovers will not change their preference unless certain features are not available on the device (while being available on others), period.
The lack of talk and surf at the same time on the iPhone 5 is making me question getting it. I'm still on the iPhone 4 and that is the one feature I miss (I was an AT&T customer). I switched to Verizon from AT&T after dropping 18 calls in one week. I was really looking forward to this feature and it's still not available on the Verizon iPhone. Yes, it is mainly a CDMA issue but is it is also due to the design of the iPhone. Apple went against allowing certain features on the device for design purposes. Yes, the iPhone is a great device but Apple stopped innovating long ago (my opinion). Basic functions that are or have been on Android devices for years are now making their way to iOS, slowly.
Samsung's Galaxy S III smartphone allows Verizon and Sprint users to talk and surf the web at the same time unlike the iPhone 5. That is the feature Samsung should be selling to its potential Verizon and Sprint customers.
Samsung needs to stop focusing on the entire smartphone user market as a whole and find the appropriate niche.