SEOUL, Sept 10 : Samsung launched a publicity campaign for its foldable phones, touting its hardware advantage and its early entry into the segment as it seeks to fend off a major challenge from Apple.Apple unveiled on Wednesday the Duo, a folding $1,999 iPhone aimed at shaking up a category long dominated by

The competition is “absolutely welcome” by the pioneering Korean giant, but Samsung warns that the device’s “weight” is crucial.

Samsung says it welcomes Apple’s entry into the foldable smartphone market, although the company appears to feel threatened by the...