https://www.techradar.com/news/samsung-galaxy-s9-users-reporting-touchscreen-dead-zones-heres-how-to-test-yours

UPDATE: Samsung has officially responded in regards to reports that its new Galaxy S9 and S9 Plus handsets are experiencing touchscreen dead zones for some users. Official statement below:

"At Samsung, customer satisfaction is core to our business and we aim to deliver the best possible experience. We are looking into a limited number of reports of Galaxy S9/S9+ touchscreen responsiveness issues. We are working with affected customers and investigating.