How do I reboot the phone using hardware buttons?

Try holding down one of these button combinations:

• Hold down the VOLUME DOWN and POWER buttons at the same time. Release the buttons when the phone vibrates.
• Hold down the VOLUME UP and POWER buttons at the same time until the phone restarts.
• Hold down the VOLUME UP, VOLUME DOWN, and POWER buttons at the same time for up to 2 minutes.

On some phones, some of these combinations may power the phone on into the Bootloader or Download Mode screen. If a list of options appears, use the VOLUME buttons to scroll to REBOOT or Fastboot > Reboot, and press the POWER button to select it.

Note: Make sure you do not select the other options on the screen. Doing so may void your warranty or brick your phone.