To hard reset a Samsung phone, the usual path is: back up anything important, then either reset from Settings or use Recovery Mode if the phone is frozen or you can’t unlock it.

Reset from Settings

  1. Open Settings.
  2. Tap General management.
  3. Tap Reset.
  4. Tap Factory data reset.
  5. Review what will be erased, then tap Reset or Delete all to confirm.

Reset with buttons

  1. Power the phone off.
  2. Press and hold Volume Up + Power/Side button until the Samsung logo appears.
  3. Release the buttons when Recovery Mode shows up.
  4. Use the volume keys to highlight Wipe data/factory reset.
  5. Press the power key to select it, then confirm Factory data reset.
  6. Choose Reboot system now when finished.

If the phone is frozen

For a simple forced restart, hold Power + Volume Down for more than 7 seconds until it restarts. This does not erase data; it just reboots an unresponsive phone.

Before you do it

  • Back up photos, contacts, and files first.
  • Remove Google/Samsung accounts if you’re planning to sell the phone.
  • Make sure the battery is charged or keep it plugged in during the reset.

One important warning

A factory reset erases apps, accounts, and personal data on the device, so only use it when you’re ready to wipe the phone.

If you want, I can give you the exact button combo for your specific Samsung model.