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Re:iPhone 15 and iPhone 15 Plus by stouset on Wednesday September 13, 2023 @12:38AM (#37492260)
Unless you received a faulty cable, which I guess is technically possible if extremely unlikely, this is categorically untrue.
Re:iPhone 15 and iPhone 15 Plus by worthless-trash on Wednesday September 13, 2023 @01:46AM (#37492665)
In my limited experience, USB cables do go bad. Fortunately the USB-C and A female ends take much more abuse than the cables.
Re:iPhone 15 and iPhone 15 Plus by Reason077 on Wednesday September 13, 2023 @03:11AM (#37493216)
It's actually not technically possible for a faulty USB-C cable to function as a (> 5V) charging cable without data, because the power delivery negotiation happens over the data connection.
Re:iPhone 15 and iPhone 15 Plus by terom on Wednesday September 13, 2023 @05:16AM (#37494241)
For USB C-C cables PD and passive 5V (5K1 pulldown) is negotiated over a separate CC pin from the USB2 D+/- pins, so it's theoretically possible if the D+/- lines are not connected/damaged.

USB A-C cables are entirely separate, there is no CC line, only a fixed always-on Vcc pin at 5V.