Chances are, you use your ... Bixby button. So it can be tricky to power down your phone unless you know how. We'll take you through several methods to turn off your Samsung Galaxy S21.

Samsung really wants you to use ... go to turn off or reboot your phone. Out of the box, you need to press and hold the power button and volume down to turn off or reboot your Galaxy S21.

And if the Galaxy S21 is your first experience with Samsung ... power button doubles as a way to wake or lock the screen and to summon Siri (with a long press). To turn off the iPhone, you ...

Want to get even more out of Samsung's Galaxy ... I've discovered on the Galaxy S21 Ultra so far. If you long-press the power button expecting to turn the phone off, you're in for a surprise.

Most phones have a button on the right edge that turns it on and off ... you to use Samsung’s inductive stylus technology. You can get a stylus specifically for the S21 Ultra, plus a case ...