The 4 screen strategy is the vision being pursued by most of the top tech firms in the world and essentially involves the firms building for these 4 types of devices; the TV, Smartphone, tablet and PC. The notion is that if a firm can have a platform that runs on and unifies all of these 4 devices, then seamless and very innovative things can be done. Interoperability across these devices would be greatly enhanced. Examples would be an app that can run on all 4 devices without any change in source code or the seamless transfer of music, movies and files across devices and so on. Most of these tech firms share the thoughts that a unified platform/ecosystem is advantageous, at least to an extent. The big question though is how this would be implemented.
The tech firms have all been pursuing this strategy in very different ways and as to whose strategy is best are left for the consumer to decide. So then I’ll go on and let you in on what all the major guys have been up to. I will concentrate on the big 3 of Apple, Microsoft, Google plus Samsung.
Below is a table describing the various devices built for these form factors.
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Apple
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Microsoft
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Google
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Samsung
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PC
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Macbook runs MacOSX
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Windows 7 runs on OEM PCs
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ChromeOS runs on OEM PCs
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PCs run Windows 7
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Smartphone
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iPhone runs iOS
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Windows Phone 7 runs on OEM phones
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Android runs on OEM phones
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Phones run Android/Bada
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Tablet
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iPad runs iOS
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Windows 8 to run on OEM tablet in 2012
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Android runs on OEM tablets
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Tablets run Android
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TV
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Apple TV (settop box)
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Xbox 360
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Android runs on OEM TVs
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TVs to run Android in 2012
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Apple
Apple currently has all 4 screen implementations up and running. They have the Macbook, iPad, iPhone and the Apple TV. Their Macbook runs the MacOSX and thought similarities exist between it and the iOS which runs on both the iPad and the iPhone they are different in varying ways. Rumours have it that future versions of both OSes will be heavily integrated. With its release the iPhone4S sold an impressive 4 million handsets in 1 week. And with these sales being powered hugely by apps on the Apple Appstore, they must be pretty serious about app interoperability across devices. AppleTV on the other hand is a small set top box that streams content to any connected TV.For now Apple is calling it a hobby but its being rumoured they will unveil their own TV nicknamed iTV in 2012. Apple might have had their smartphone and tablet strategy right, however its left to be seen how or whether they pull the TV and Macbook in to convergence.
Microsoft
However, there is a catch to all these: The almighty CLOUD.

