Turning off a smartphone used to be a matter of holding down a single button until the screen went dark. In 2026, that simplicity has largely vanished. Most modern manufacturers have repurposed the traditional power button to trigger AI assistants, emergency services, or camera shortcuts. This shift leaves many people wondering why their device refuses to shut down despite pressing the very button designed for that purpose.

Understanding how to turn the phone off requires recognizing that "Power Off" is now often a software command triggered by a combination of hardware inputs. Whether you are using the latest iPhone, a Samsung Galaxy, or a Google Pixel, the process involves specific sequences that differ by brand and software version.

Why the power button doesn't work like it used to

The physical button on the side of your device is no longer just a power switch; it is a "Side Key." For Apple, it activates Siri. For Samsung, it summons Bixby or a custom AI interface. For Google, it often brings up the Google Assistant. This change was implemented to give users faster access to voice commands and smarter features without needing to unlock the screen. Consequently, the act of shutting down the system has been moved to a secondary layer of the interface or a multi-button combination.

How to turn off an iPhone

Apple’s transition away from the dedicated power button started with the removal of the Home button. On modern iPhones, simply holding the side button will not present the power-off slider.

Models with Face ID

This includes almost every flagship model released in the last several years. To shut these devices down:

  1. Press and hold the Side Button (on the right) and either the Volume Up or Volume Down button (on the left) simultaneously.
  2. Maintain the hold for approximately two to three seconds until the "slide to power off" bar appears at the top of the screen.
  3. Drag the slider to the right. The device will take about 30 seconds to fully shut down.

Models with a Home Button

If you are using an iPhone SE or an older model that retains the circular button below the screen, the process is more traditional:

  1. Press and hold the Side Button (or Top Button on very old models) until the slider appears.
  2. Slide to power off.

The software-only method

If your buttons are damaged or difficult to press, iOS provides a way to turn the phone off within the menus:

  1. Open Settings.
  2. Navigate to General.
  3. Scroll to the very bottom and tap Shut Down.
  4. Move the slider to confirm.

Shutting down a Samsung Galaxy phone

Samsung was one of the first manufacturers to rebrand the power button as the "Side Key." By default, holding this button on a new Galaxy S or A series phone will trigger an AI assistant. There are three primary ways to access the power menu on a Samsung device.

The button combination

To shut down a modern Samsung phone:

  1. Press and hold the Side Key and the Volume Down button at the same time.
  2. Wait for the power menu to appear on the screen.
  3. Tap the Power Off icon, then tap it again to confirm.

Using the Quick Settings panel

This is often the easiest method for those who find the button combinations awkward:

  1. Swipe down from the top of the screen to open the Notification Shade.
  2. Swipe down a second time to reveal the full Quick Settings grid.
  3. Look for the Power Icon (a circle with a vertical line) usually located near the settings gear in the top right or bottom right corner.
  4. Select Power Off from the menu.

Changing the Side Key behavior

If you prefer the old way of turning the phone off, Samsung allows you to remap the button:

  1. Go to Settings.
  2. Tap Advanced Features.
  3. Select Side Key.
  4. Under the "Press and hold" section, change the selection from "Wake Assistant" to Power off menu.

How to turn off a Google Pixel

Google’s Pixel lineup follows a similar logic to other modern Android devices, prioritizing the Assistant over the power menu.

The standard shortcut

On recent Pixel models:

  1. Press and hold the Power Button and Volume Up button simultaneously.
  2. A pop-up menu will appear with options for Emergency, Lockdown, Power Off, and Restart.
  3. Tap Power Off.

The Quick Settings method

Just like other Android phones, the Pixel offers a software shortcut:

  1. Swipe down twice from the top of the home screen.
  2. Tap the small Power Icon located at the bottom right of the expanded settings menu.
  3. Choose Power Off.

Motorola and other Android brands

Motorola, OnePlus, and Xiaomi typically adhere to the same principles as Google. For most devices released in 2025 and 2026, the combination of Power + Volume Up is the most reliable hardware trigger for the shutdown menu. If that fails, holding the power button for a full 10 to 15 seconds will usually force the menu to appear, though this might trigger a restart depending on the specific firmware.

Force restarting a frozen phone

Sometimes, the reason you are trying to turn the phone off is that the screen has become unresponsive. In these cases, the on-screen slider or power icons are useless. You need a "Hard Reset" or "Force Restart."

For iPhone

A specific sequence is required for modern iPhones:

  1. Quickly press and release the Volume Up button.
  2. Quickly press and release the Volume Down button.
  3. Press and hold the Side Button and keep holding it even after the screen goes black. Release it only when you see the Apple logo appear.

For Android (Samsung, Pixel, Motorola)

Android devices are generally more straightforward for force restarts:

  1. Press and hold both the Power Button and the Volume Down button for at least 10 to 20 seconds.
  2. The screen will eventually go black and the device will vibrate as it reboots. This clears the system memory and resolves most temporary software freezes.

Understanding the different power states

It is helpful to distinguish between "Power Off," "Restart," and "Sleep" to ensure you are choosing the right action for your situation.

  • Sleep Mode: This happens when you tap the side button once. The screen goes dark, but the phone remains fully active. It still receives calls, messages, and updates. This consumes battery, though at a lower rate.
  • Power Off (Shut Down): This completely terminates all software processes and cuts power to most hardware components. Use this if you won't be using the phone for several hours or if you need to save every bit of battery.
  • Restart (Reboot): This shuts the phone down and immediately starts it back up. This is the most effective way to clear out "digital cobwebs"—small bugs or lag that accumulate over days of use. It is a good habit to restart your device at least once a week.

When buttons are broken: Accessibility options

If your physical buttons have failed entirely, you can still manage your phone's power status through accessibility features.

On iPhone: AssistiveTouch

  1. Go to Settings > Accessibility > Touch.
  2. Turn on AssistiveTouch. A floating grey circle will appear on your screen.
  3. Tap the circle, go to Device, and then tap and hold the Lock Screen icon. This will trigger the power-off slider.

On Android: Accessibility Menu

  1. Navigate to Settings > Accessibility.
  2. Find and enable the Accessibility Menu or "Accessibility Shortcut."
  3. An icon (often a small person or a green dot) will appear on the edge of your screen. Tap it to open a large menu that includes a Power option.

Maintaining battery health during shutdown

There is a common misconception that turning a phone off and on frequently damages the battery. In reality, modern lithium-ion batteries are designed for thousands of power cycles. However, if you plan to leave your phone off for an extended period (weeks or months), do not charge it to 100% or let it drain to 0% before shutting it down. Storing a device at roughly 50% charge is the most stable state for the battery chemistry.

Turning the phone off shouldn't be a source of frustration. While the buttons have changed their primary roles to accommodate the needs of 2026's AI-driven mobile landscape, the control remains in your hands. Whether through button combinations, the notification panel, or accessibility settings, you have multiple ways to ensure your device stays under your command.