So far, 8k miles on my T4R and it's been mostly a good experience. I will say that I cannot understand why the technology is so far behind or an afterthought when it came to implementation in these 5th gen 4runners. Specifically with the Hands free/bluetooth/Apple carplay and auto headlights to name a few.
Yes, I've done the software updates (head unit and IOS) and all the tricks with the volume and even sticking the phone and my pocket and still nothing fixes the God awful echo on the recipient end of the call. It's one thing to tell my kids or mom "sorry about the echo", but when I've got a business to run, pulling over to have a conversation with the phone to my ear is just a ridiculous thought in 2020.
For comparison, I've got a 2017 Lexus RC. Bluetooth works absolutely fine without a hitch everytime. It just makes no sense to me how a proven technology that's been successfully implemented in so many cars for so long just can't be done correctly. Calls through Apple Carplay aren't any better, but at least the new software version helped with the other issues.
Trying to find help, I came across this class action lawsuit about the echo issue:
Toyota Bluetooth Echo Problems Cause Lawsuit | CarComplaints.com
Ok, rant over.