I bought an S21 Ultra, about 3 months back, ever since I have had issues with fingerprint scan and phone heating up. I could live with the fingerprint issue but frankly Huawei Nova did a better job and it's worth 3 times less. But the real issue is the phone heats up, especially if I were to use the Camera. I took some photos outdoor and only spent about half an hour and shot 5 pictures. The phone prompted me that the camera has been disabled until the phone cools off.
I have sent it over to a Samsung Service Centre and I hope that I can use my phone for taking photos because that is the main reason I bought an S21 Ultra,