On supported Galaxy phones, go to Settings > Advanced features > Side button (sometimes labelled Side key). Choose Double press or Long press, then select an action available on your device. The choices and defaults vary by model, software, carrier and region.
Change what the Side button does
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Open Settings.
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Tap Advanced features.
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Tap Side button or Side key, using the label shown on your phone.
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Choose Double press or Long press.
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Select an available app or feature. If an option has a gear icon, tap it to see whether you can choose a specific action within that app.
Samsung’s UK guide, updated 19 August 2025, lists possible double-press actions such as Camera, Samsung Wallet, Flashlight, Magnifier, Voice Recorder, Samsung Notes, Samsung Capture, Modes and Routines, and apps. Not every choice appears on every phone. The US guide also describes a range of app and feature shortcuts.
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Choose between double press and long press
These gestures are set separately. Double press is generally used to open a selected app or feature; long press can be assigned to an assistant or, where offered, the power-off menu. Check the options displayed on your own phone rather than assuming a particular default: Samsung’s descriptions differ across device generations and software.
Double press
Choose this if you want a quick shortcut to an app or feature. Some supported options may offer an additional in-app action through a gear icon. The available list is device- and region-dependent; Samsung’s guides include examples such as opening Camera or starting a recording, but do not promise every example for every Galaxy phone.
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Long press
Depending on the device, the choices may include a digital assistant, Bixby, or the power-off menu. Samsung’s recent UK guide says the long press launches Gemini on devices covered by that guide. Your available actions and default may differ.
Turn off the phone if long press opens an assistant
If you assign long press to an assistant, Samsung documents other ways to reach power controls: open the Quick panel and use its power control, or hold Side button + Volume Down. Samsung also describes asking Bixby to turn off the phone. The exact button behavior can depend on the device and setup.
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What happens with the other button gestures?
A single press normally wakes or locks the screen. A brief press of Side button + Volume Down takes a screenshot on devices covered by Samsung’s guide; holding the combination can bring up power-off or Emergency SOS actions, depending on the device and configuration. These actions are distinct from the double-press and long-press settings.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Why the setting or options may look different
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Samsung uses more than one label. The setting may say “Side button” or “Side key.” Follow the wording in your Settings app.
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Menus depend on model and software. Samsung says supported features and settings vary by model and OS or software version. The UK guide also notes carrier and regional variation.
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Tablet instructions can differ. Samsung Australia’s guide, updated 18 August 2026 and scoped to Australian variants, gives Settings > Advanced features > Side Key for phones and Settings > Advanced features > Side button for tablets. See its Australian instructions if you use an Australian variant.
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Older Galaxy phones may have a separate Bixby button. Current Side button instructions apply to supported phones with the multifunction Side button, not necessarily models with a dedicated Bixby button. Samsung’s US support page identifies examples of those older devices.
If the route or choices do not match your phone, search Samsung Support for your local region and model. Samsung’s UK, US, and Australian guides document different regional and device-specific instructions.
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