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Apple is identifying defective iPhone Duo units by serial number
Alexander Lazarchuk2 min
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Cracks on the inner screen of the foldable iPhone Duo may be related to the quality of the materials used to make the hinge. According to preliminary information, Apple may be able to identify which devices are affected by the defect.
The problem may lie with the materials
New details have been revealed by Chinese leaker Kang. According to him, the defect may have been caused by materials supplied by one of the two companies that make hinges for the iPhone Duo.

If this theory is confirmed, the problem may affect only devices made using materials from this supplier. Apple has not officially disclosed the cause of the cracks.
Apple may be able to identify affected devices
According to Kang, Apple may be able to use serial numbers to determine which iPhone Duo units belong to potentially affected batches.
It is not yet known whether the company will launch a serial-number lookup for buyers or offer replacements before the defect appears. Apple confirmed that the inner-screen problem affects a small number of iPhone Duo units and advised owners of such devices to contact AppleCare for a replacement.
AppleiPhoneiPhone Duo
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