I have the iOBD2 which is similar in functionality, but creates a WiFi hotspot that the iPhone connects to. It was a bit finicky and tricky to set up, (there was a software glitch that required a work-around, but their support tech replied to my email within 24 hours) but once set, it has worked reliably and I've been happy with it. Love having the ability to diagnose and reset error codes on my iPhone.
iOBD2 on Amazon
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