Android devices will not drive every camera, so the pairing that usually works is a UVC-class USB webcam plus a USB-C or OTG connection.
- UVC support stated in the specification, since that is what lets Android recognize the camera without a driver.
- The plug you actually need: native USB-C, or USB-A with an OTG adapter included.
- Resolution and frame rate together, because 1080p at 30fps looks smoother than 4K that stutters on a phone.
Confirm the seller lists Android among supported systems, and check whether a microphone is built in or you plan to use a separate one.