Multi-Window is a key feature for the Samsung Galaxy Note II because it adds split-screen functionality to the device's 5.5-inch display -- allowing you to run two apps at the same time -- but unfortunately it has been noticeably absent on the phone's US versions. Until today, the carriers have remained oddly silent about if or when their model would even receive it. Two weeks after its initial release, Sprint's Note II will receive an update (L900VPALJC) that enables the missing feature, in add
