Owners of the new foldable iPhone Duo smartphones have complained about the formation of cracks in the screen along the fold line, writes Bloomberg. Apple has confirmed that the problem affects "a small number of devices". "If users experience problems with their iPhone Duo screen, they should contact AppleCare for a replacement," the statement said. Apple introduced its first foldable smartphone in September. Worldwide sales began on October 23 with prices starting at $1,900. Telegram | Max | Read exclusively.