There are a few steps you can take to try and get your phone to turn on again:
- Press and hold the Power button for 20-30 seconds.
- Try plugging in your phone to a power source and let it charge for a few minutes.
- Check to see if the Power button is jammed or sticking. If it sticks, gently clean the area around the button.
- Attempt to do a force restart by pressing and holding the Volume Down and Power buttons together.
- Check to see if you need to replace the battery or the screen.