The question is about identifying the world's first holographic screen phone that can produce 3-D visuals without the need for special glasses. The options given are:
- Hydrogen One
- Nitrogen One
- Carbon One
- Oxygen One
The correct choice here is 'Hydrogen One'. This smartphone was developed by RED Digital Cinema and is known for its innovative feature of a holographic display. The ability to display 3-D visuals without glasses makes it unique and groundbreaking in mobile technology. Therefore, the answer to the question is:
Hydrogen One