the s10 line comprises five models with various hardware specifications; the main s10 and s10+ respectively feature 6.1 and 6.4-inch 1440p "dynamic amoled" displays with hdr10+ support and "dynamic tone mapping" technology. the displays have curved sides that slope over the horizontal edges of the device. unlike previous samsung phones, their front-facing cameras occupy a rounded cut-out near the top-right of the display, and both models use an ultrasonic in-screen fingerprint reader. while providing better performance over the optical in-screen fingerprint readers introduced by other recent phones, they are not compatible with all screen protectors. due to this, the s10 and s10+ are both supplied with a pre-installed plastic screen protector.