Apple unsure when more foldable iPhones will be available after selling out BBCApple’s iPhone Duo Skeptics Are Missing the Entire Point of Foldables PCMag AustraliaiPhone Duo review: A foot in the future, a foot in the past WhistleOutApple is ‘not able to predict’ when it’ll have enough iPhone Duos to go around The VergeJust Got an iPhone Duo? Try These Features First MacRumors