Carl Zeiss , the renowned optics manufacturer, has decided to make way for its own alternative to Samsung's Gear VR headset that uses an inserted smartphone to generate a 3D world. However, it differs widely from the Samsung offering since Carl Zeiss VR One is going to offer compatibility with a wide range of smartphones which range between 4.7a 3 and 5.2a 3. However, you will be required to purchase a special tray for each new device.