Does the USB data port on the Tucson also charge the connected device? If not, a self-powered hub won't work. (I don't have my Tucson yet to test this. The online Owner's Manual doesn't say.)
Even if it is a charging port, there might not be enough "juice" to run the hub and two devices. Kevinrobedm - Was the hub you tried AC-powered or self-powered? If the hub has optional AC power, I would suggest trying that just to see if a hub will even work with the Hyundai UI.
If the USB data port is a charging port, and if an AC-powered hub does work, then it may take some experimentation to find out if there is a hub that will work in self-powered mode in the Tucson. Some hubs are finicky about power.
I found this little puppy, but it won't charge your phone. No problem if you are using the wireless charging pad. (Also looks like they have discontinued the item, so availability is unknown.)
Featuring a clean, compact design, this standard USB hub enables two devices to share a single available USB port with full USB 2.0 compatibility and performance.
This has 4 ports. StarTech is a good brand.
4 Port USB C Hub - Mini Hub - USB-C to 4x USB-A - USB 2.0
This has an interesting form factor.
Lightweight design enables the hub to be compact and portable USB Connector Can be Rotated 90/180 Degrees Easy Setup, Plug-n-Play, Hot Swappable, Hot Pluggable Compatible With all Windows/Mac/Linux Systems Instantly Add Four USB 2.0 Ports to Any Compatible Device
As an alternative, you should be able to switch between the devices, using one device at a time. More convenient than switching cables. I found these. You would also need two USB A Female to USB B Male adapters.
2 Port 2-to-1 USB 3.0 Peripheral Sharing Switch – USB Powered - 2x1 USB Peripheral Switch - 2 Port USB Switch - USB 3.0 Switch
Plug & Play (PnP) for easy setup and use; requires no additional drivers. Single button for swapping a device between two computers. Hub-compatible for multiple peripherals. LED indicators to distinguish computer control. Data transfer speeds up to 480Mbps (USB 2.0). Includes two cables to get...