I have one of these units.
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I got this because my experience with the small AAWireless unit that I bought was so poor.
It works well, plug into the USB slot and it connects to the car via the Carplay system (even though my phone is Android). From there you can connect to Android Auto on your phone via BT/WiFi.
You can insert a sim card of your choice into the unit and it can actually run completely independent of the phone.
This is the link to where I got mine. It arrived from China really quickly in about 10 days.
Smarter Shopping, Better Living! Aliexpress.com
www.aliexpress.com
To be honest I am still playing with it but it does everything I need. I have a BT OBD dongle attached to the car and this links with ABRP to get real time SOC and great journey planning.