Apple's first foldable iPhone Duo continues to face tight supply more than two weeks after its October 23 store debut. Deliveries have slipped into late January for many configurations, with production reportedly still ramping slowly to meet Apple's quality standards. Early owners have also flagged isolated screen cracking issues along the hinge, prompting quick replacements in some cases. The $1,999 starting price and limited availability are testing demand for Apple's most ambitious iPhone yet under new CEO John Ternus.