Samsung says its Galaxy S21 phones work better, have four back cameras - and cost $200 less

Here's a radical idea in consumer tech: Samsung has new flagship phones it promises work better and cost less than last year's models.

At an online event Thursday, the world's largest smartphone maker unveiled the Galaxy S21, a line of three 5G Android phones that pack new capabilities but also shave $200 off the price of equivalent models from the previous Galaxy S20 line. The S21 starts at $800, while the larger-screen S21+ costs $1,000, and an S21 Ultra model with an even-larger screen and more cameras costs $1,200...