Skip to main content

How to turn off your Samsung Galaxy S21

Chances are, you use your new Samsung Galaxy S21 for everything, from internet banking to social media, sending messages to friends and family to playing the latest games. You might think you know all there is to know about your phone, but what happens when it's time to turn it off? That might sound simple, but it's actually not the case. Samsung's latest flagships hide their power options behind the 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.

Difficulty

Easy

Duration

5 minutes

What You Need

  • Samsung Galaxy S21 series phone

On Galaxy S21 series phones, the side key also acts as the power button. However, long-pressing it actually launches Bixby, Samsung's voice assistant. So, how do you turn your phone off without summoning Bixby? There are three ways to do this, and we'll walk you through each, step-by-step.

Method 1: Slide down your notification tray

The quickest and easiest way to turn off your phone is by using the notification tray.

Step 1: Swipe down from the top of the screen to reveal your notification tray. Then swipe down again.

Step 2: Tap the Power icon in the top right to bring up your phone's power menu.

Step 3: Tap Power Off.

Method 2: Simultaneous button press

There's an alternative quick and easy way to turn off your phone. Just hold down the Power button and Volume Down buttons simultaneously to open the Power Menu, then select Power Off.

Method three: Remap your Bixby key

Because turning off your phone is something you're going to want to do on the regular. we'd recommend method three as your go-to. With this method, you'll remap your side key function so in the future it turns off your phone rather than triggering Bixby.

Here's how to do that.

Step 1: Go to Settings.

Step 2: Select Advanced Features.

Step 3: Tap Side Key.

Step 4: This menu allows you to choose what a long-press (press and hold) of the side key does. Select Power Off.

From now on, long-pressing the side key on your S21 will bring up the Power Off menu, from where you can simply tap Power Off to turn your phone off. It's important to remember that remapping the side key disables Bixby, so if you do use Samsung's voice assistant, bear this in mind.

While you can go for the quick fix with the first two methods here, we'd definitely recommend taking a few minutes out of your day to remap your phone's Bixby key, especially if you never use Samsung's voice assistant.

Editors' Recommendations

Paula Beaton
Freelance tech and travel writer living in (somewhat) sunny Scotland. Gamer, tea addict, never without a good book.
A new version of the Samsung Galaxy S24 could be coming soon
Samsung Galaxy S23 FE Mint Green color along with a coaster and leaf in the front.

Samsung Galaxy S23 FE Tushar Mehta / Digital Trends

Samsung could soon be adding a new phone to the flagship Galaxy S24 lineup. Following the Galaxy S24, S24 Plus, and S24 Ultra from earlier this year, it looks like Samsung is getting ready to launch the Galaxy S24 FE.

Read more
How to use Circle to Search on your Android phone
Samsung Galaxy S24 showing Circle to Search.

When Samsung announced its Galaxy S24 series, it also revealed a slew of new features in its Galaxy AI suite. One of these new features is Circle to Search, which lets you easily search for anything on the screen with a simple gesture.

Think of it like a mashup of Google Lens and a screenshot search. You can activate Circle to Search no matter what you're doing. Whether you're on your home screen, in a web browser, or using an app, you can always call upon Circle to Search.

Read more
5 things I want to see in the Samsung Galaxy S25 Ultra
The Samsung Galaxy S24 Ultra and S Pen stylus on its screen.

The Samsung Galaxy S24 Ultra is definitely one of the best smartphones on the market right now, no doubt about that. You get incredible performance with the Snapdragon 8 Gen 3 chip, plenty of RAM and storage, a whopping 200MP camera, two telephoto lenses for 3x and 5x optical zoom, S Pen integration, and more. It’s certainly an impressive package.

But it’s not perfect. In fact, some weaknesses could be improved in the next version, the Galaxy S25 Ultra. Here’s what I hope to see next year.
A new design
Samsung Galaxy S24 Ultra (left) and Galaxy S23 Ultra Andy Boxall / Digital Trends

Read more