The module itself is very thin: https://www.ifixit.com/Teardown/iPhone+12+and+12+Pro+Teardown/137669#s274757 https://www.ifixit.com/Teardown/iPhone+12+and+12+Pr

The module itself is very thin: https://www.ifixit.com/Teardown/iPhone+12+and+12+Pro+Teardown/137669#s274757 https://www.ifixit.com/Teardown/iPhone+12+and+12+Pro+Teardow... I believe they could've quite easily reduced the bezel width.