Galaxy S21 vs. Galaxy S20: Samsung's 2021 and 2020 flagships compared

Editor's note: This story mistakenly said that the Galaxy S21 line includes expandable storage of up to 1TB. However, the S21 phone line does not include a microSD card slot. We regret the error. Samsung's Galaxy S21 phone line was announced at a virtual event in January. (Here's where to...