So I am about a week in at this point. I have owned it for a week, but I have only been fully transferred over to the OnePlus 6T from my Note9 for a few days.
The camera is a bit of a bummer and I hope it can be improved with software updates.
It certainly is not bad, but after going from the LG V20 to the S9+ to the Note9, there is a noticeable drop in quality. And it is certainly passable, but my 1 year old nephew was over earlier and I was taking pictures of him playing and running around. They came out ok, but in my mind I was thinking, "these would look better on my Note"
I still wish it was a bigger physical device.
I used headphones with a Moto Z2 Force dongle and they worked fine in the OnePlus 6T. And I found the audio quality to be surprisingly good.
The phone is fast and fluid and I am liking it more each day.