Could be not enough power output to produce a charge in the iPhone. Not an expert but a possibility. I had a non powered usb hub once that wouldn’t charge a phone.
Some PC manufacturers manage USB power in the BIOS.Thanks, that is probably the reason. I've tried a number of devices with microUSB with different power requirements and they all charged though. I doubt the iPhone has a higher requirement than those.
Some PC manufacturers manage USB power in the BIOS.
Have you tried different cables. Is the cable you're using Apple OEM or 3rd party? In my experience some 3rd party lightning cables paired with 3rd party power sources don't always play well with some iOS devices.
Anyone have any other ideas? Thanks!
Could be the demand to charge the iPhone is greater than your other micro-usb devices. Especially if you iPhone is turned on. There are different demands for different devices.