iPhone Duo hinge cracks reported by early owners

Some iPhone Duo owners are reporting display cracks along the hinge shortly after purchase, with photos shared on Reddit and MacRumors forums. The faults appear as bright pixel lines on one side of the screen. One Australian owner said his device cracked after fewer than 20 opens, with no prior visible damage. Apple replaced the broken unit immediately and is likely collecting defective devices to research failure points for manufacturing improvements. Images of broken demo displays in China also surfaced, though user damage may be a factor. Some early reviewers' folding tests showed no issues. Hinge failures from normal use should be covered under the one-year warranty.