I also have this problem with an iPhone 11. A large dark shadow bottom left of screen about 3cm in diameter. Happened after 3 days. Resetting did not clear it.
I returned it to the Apple authorised store from where I had purchased it.
They looked at me with suspicion and the sales rep. then spent 15 minutes examining the phone, taking pictures of it and typing a lot.
They just assumed that I had dropped it.
I was told that I would hear back from them in 48 hours.
I haven’t and that’ s now 3 days ago.
So here’s the scenario:
Purchased a new iPhone 11. It was faulty. Store assumed no responsibility. I feel they have almost insinuated that I am at fault. I now have no phone, Apple aut. store has not refunded me.
I am not sure of my consumer rights here but I feel like they’ve been violated.
I note that the reply above form a community specialist says it should be evaluated for service. No, it shouldn’t. It’s a new phone, that at the time of writing is at best only a few months old. It’s obviously a fault and it should be replaced not ‘evaluated’,