In this regard, can you use an Oculus Rift without a PC?
In short, the answer to the questions is no — you cannot use an Oculus Rift without a PC.
Also, how do I VR without a headset? You may hold your phone in one or both hands and use your finger to tap the screen for controlling the app, just like a magnet or touch button found in some Cardboard viewers. When you use an app you hold the phone steady in front of you and turn your head or body to see areas out of viewing range in a VR scene.
Similarly, you may ask, do I need a computer for VR?
But whether you want to play the latest VR games or make a living developing applications for VR and AR, you need a powerful enough computer or a laptop. Why should your computer be powerful? Because it does all the heavy-lifting: processing and rendering.
Is your PC Oculus ready?
To test whether your PC is ready for the Oculus Rift, download the Oculus Rift Compatability Tool and run it. The tool will check your PC's hardware to ensure you have a sufficient graphics processor, CPU, RAM, and number of USB ports to support the hardware.