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iPhone 15 Pro Max: Connects at USB 2.0 speed 9/10 Times

re: iPhone 15 Pro Max

re: iPhone 15 Pro Max can Degrade Thunderbolt Peripherals to USB 2.0 Speed

You have to wonder whether Apple tests anything anymore, or just flings stuff out the door on the proscribed date.

On both of my Macs*, the iPhone 15 Pro Max connects at USB 2.0 speeds 9 times out of 10—glacially slow—things that should take a minute will take hours. And that’s not the worst issue. Another Apple Core Rot bug.

Trying half a dozen different top-quality cables doesn’t matter (Thunderbolt 3, Thunderbolt 4, USB-C, etc).

The issue seems to be “sticky”: when it connects at USB 3 speeds (10 Gbps), it may do so a few times in a row. But when it connects at 480 Mbps (20X slower), it likely to stay that way, no matter how many times I plug/unplug.

Apple really sold us a bill of goods on USB 3 support in these new iPhones.

* 2023 Mac Pro M2 Ultra and 2021 MacBook Pro M1 Max, both running macOS Ventura 13.6.1.

MacPro:2023 $ system_profiler SPUSBDataType
USB 3.1 Bus: Host Controller Driver: AppleASMediaUSBXHCI PCI Device ID: 0x1242 PCI Revision ID: 0x0000 PCI Vendor ID: 0x1b21
iPhone: <=== iPhone 15 Pro Max Product ID: 0x12a8 Vendor ID: 0x05ac (Apple Inc.) Version: 16.02 Serial Number: 00008130000E20C82061401C Speed: Up to 480 Mb/s Manufacturer: Apple Inc. Location ID: 0x0a400000 / 22 Current Available (mA): 500 Current Required (mA): 500 Extra Operating Current (mA): 0

It should look like this:

MacPro:2023 $ system_profiler SPUSBDataType
USB 3.1 Bus: Host Controller Driver: AppleASMediaUSBXHCI PCI Device ID: 0x1242 PCI Revision ID: 0x0000 PCI Vendor ID: 0x1b21
iPhone: Product ID: 0x12a8 Vendor ID: 0x05ac (Apple Inc.) Version: 16.02 Serial Number: 00008130000E20C82061401C Speed: Up to 10 Gb/s Manufacturer: Apple Inc. Location ID: 0x0a400000 / 22 Current Available (mA): 500 Current Required (mA): 500 Extra Operating Current (mA): 0
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