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To restart a Samsung Galaxy phone that responds, open the Quick panel, tap the power icon, then choose Restart. If the phone is frozen, hold the Side/Power key and Volume Down together for more than seven seconds, until the device restarts. The key names and gestures can vary by model and software version.
Restart a Samsung phone that still responds
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Swipe down from the top of the screen to open the Quick panel. Depending on your model, you may need to swipe down twice to see all controls.
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Tap the power icon.
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Tap Restart, then confirm if prompted.
Samsung says restarting can close running apps and refresh the system. It is different from a factory reset: a restart does not erase your data. Samsung’s US troubleshooting guidance treats factory reset as a separate step.
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If the screen is frozen or you cannot use the power menu, press and hold the Side/Power key and Volume Down at the same time for more than seven seconds, until the phone restarts. Release the keys when the Samsung logo appears. Samsung’s guidance is to keep holding until the device restarts; a brief press may instead open the ordinary power menu.
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On some models the relevant key is labeled Side, Power, or Side/Power. If the combination is difficult to press, remove the case in case it is obstructing either button. A charger is not needed for a routine or forced restart. See Samsung Australia’s instructions if the phone will not turn on.
If the phone appears completely off
A depleted battery is one possible reason a Galaxy phone will not start. Connect it to a Samsung-certified charger and cable, using compatible, undamaged equipment. If the battery is fully depleted, it may take some time before a charging indicator appears. Once the phone has enough charge, try turning it on again.
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If the button combination opens Maintenance Boot Mode
If a maintenance screen appears instead of a restart, use a volume key to highlight Normal Boot, then select it with the Power or Bixby key, as applicable to your model. If the phone still will not restart or shows signs of hardware trouble, contact Samsung support or arrange service rather than attempting speculative repairs. Samsung’s boot-loop and startup troubleshooting guidance covers further escalation.
When the controls do not match
Button names, power-menu gestures, and the behavior of a long press can differ across Galaxy models and software versions. On some newer devices, holding Side and Volume Down brings up the power menu; continue holding for the forced restart. If your controls behave differently, consult the manual or support page for your exact model and region.
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