The Galaxy Nexus is the only device I've had a chance to play around with that has Ice Cream Sandwich. I fell in love with the multitasking capabilities.
If I added or edited a contact in the address book, I could go to another app, and come back to the address book, and I would be right where I left off. This is useful for creating a new contact by typing in their contact information from their website. I could go back and forth between the browser and the address book. I'm hoping that's an ICS feature, and not just a Samsung feature.
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