Apple acknowledged an inner-display issue affecting a “small number” of iPhone Duo units and advised affected owners to contact AppleCare for a replacement. WIRED quoted an Apple spokesperson in an Oct. 26 update.
iFixit's possible pressure point at the fold
In its teardown, iFixit proposed that the hinge’s center support bar may not move clear as the display folds, creating a possible stress point. One Australian owner reported that the inner screen failed after about six hours and fewer than 20 openings.
NeoTeo previously covered iFixit's hinge theory.
Apple's folding instruction and a replacement account
Apple's iPhone User Guide says to fold the Duo closed to use its outer display.
One Reddit user said a store had no replacement unit in stock. After a lengthy call with AppleCare, the user said the company agreed to send a free replacement.
