Hi @sarahw ,
I think that this is our “friend” again, https://www.ifixit.com/User/3445984/OwensSam so I’ve banned him and deleted the post.
The “comment” to the answer in the link provided below says it all I think
https://www.ifixit.com/Answers/View/628769/iPhone+XR+gets+a+bit+hot+Is+it+normal?deleted=true#comment635166 .
Cheers.