CalDigit got back to me about the iPhone power supply issue with my Element Hub.
The hub supplies up to 7.5W per USB-A port and 15W per USB-C port. My phone draws too much power for the USB-A port to which it’s attached.
They were kind enough to offer a driver download that provides more power to select Apple devices. But another solution is to connect the iPhone cradle to a USB-C socket via a C-to-A adapter.
The adapter solution appeals to me more than the driver download. Not sure why. But that’s what I’ll do.
Seek Nuance 
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