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iPhone Duo's Vertical Dock Seemingly Limited to Four App Icons
It looks like the iPhone Duo's vertical Dock can currently only house four apps maximum. In his hands-on with the device, Marques Brownlee attempted to add a fifth app to the Dock, but was unable to do so. Apple does not mention the four-app limit in its tech documentation, but those hoping to add a fifth or sixth app to it may be out of luck. For the iPhone Duo, Apple moved the Dock to the right of the screen and made it vertical.
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