https://www.cnet.com/news/galaxy-s10-s10-plus-teardowns-show-theyre-built-to-take-the-heat/

iFixit also noted that the industry-first, in-screen ultrasonic fingerprint sensor becomes "in-screen" via glue, and that if you need to repair it, you'll probably have to get the whole screen replaced. Which makes sense, given that it's...in-screen. But that will also probably make the cost of replacement pretty pricey.

There's more -- check out the whole teardown.