USB endoscope on an Android phone

What you need

• An Android phone or tablet with a USB-C port that supports OTG (almost all do). Older micro-USB phones need a micro-USB OTG adapter and are hit and miss.
• A USB-C to USB-A OTG adapter if the camera has a USB-A plug; many endoscopes ship with a USB-C tip already.
• Chrome (Samsung Internet and Edge also work; Firefox does not).

Steps

1. Plug the camera in. If Android offers to open the UseePlus app, dismiss it.
2. Open endoscope.app/viewer in Chrome and press Connect camera. Android asks you to allow the device.
3. Photos and clips go to your Downloads folder (the page lists what you took during the visit). Chrome may ask once to allow multiple downloads.

Tip: use the phone sideways; the layout puts the capture buttons right under the picture.

Snags

• Nothing happens on Connect: the phone may be feeding the camera too little power. Try a powered OTG hub, or a different cable.
• The picture stutters: turn off Smooth noise in Advanced on slower phones.
• Android, not iPhone: iPhones and iPads cannot do this; here is why.