How to Fix Samsung Galaxy Stuck in Boot Loop

Quick Diagnosis

A Samsung Galaxy phone stuck in a boot loop (pulsing the Samsung logo repeatedly) is often experiencing a hardware key contact lockup or an internal bus crash. This can be resolved by a hardware-enforced button drain sequence.

Technical diagnostic blueprint diagram for the Samsung Galaxy showing symptoms of Stuck in Boot Loop.

Step-by-Step Resolution

  1. 1

    Verify that the physical Power and Volume keys are not physically stuck down by clicking them repeatedly.

  2. 2

    Remove any protective cases that might be placing pressure on the side buttons.

  3. 3

    Press and hold both the physical Power button and the Volume Down button simultaneously.

  4. 4

    Keep both buttons held down firmly for a full 10 to 15 seconds until the screen turns black and the device vibrates.

  5. 5

    Release both buttons immediately when the device vibrates; the system should bypass the loop and reboot normally.

  6. 6

    If the loop continues, plug the phone into a charger and repeat the forced reboot sequence to rule out low battery voltage loopouts.

Alternative Causes & Edge Cases

  • On Samsung Galaxy S20/S21 models, a boot loop can be caused by physical corrosion inside the USB-C charging port, forcing the boot-loader to cycle diagnostic checks.
  • On Galaxy Z Fold series, a loose hinge ribbon connector can trigger a boot cycle fail if the screen state changes while the OS is loading.