S21, S21 Plus, and S21 Ultra. The matte backs look dope! The vanilla S21's the only one in the series with a plastic back. : r/samsung

Samsung Galaxy S21 and Galaxy S21+ hands-on: A perfect balance - SamMobile

Case for Samsung S21 Plus Case Liquid Candy Color Silicon Back Bumper For Samsung Galaxy S21+ S 21 Samsung S215G Phone Cover

Samsung Galaxy S21 vs. Galaxy S21 Plus vs. Galaxy S21 Ultra: Is Bigger Better?

Galaxy S21 and S21 Ultra review: Enough with the feature overkill, Samsung

Samsung Galaxy S21/S21+ review: Powerful plastic

Galaxy S21 and S21 Ultra review: Enough with the feature overkill, Samsung

Samsung Galaxy S21 drop test results — one drop and it's dead

Samsung Galaxy S21 and Galaxy S21+ hands-on: A perfect balance - SamMobile

Samsung Galaxy S21/S21+ review: Powerful plastic