To use a WiFi endoscope camera with a Samsung Android device, follow these steps: 1. Download and install the compatible app for your WiFi endoscope camera from the Google Play Store. 2. Turn on the WiFi endoscope camera and connect it to your Samsung Android device's WiFi network. 3. Open the app and select the WiFi endoscope camera from the list of available devices. 4. Adjust the camera settings, such as resolution and brightness, as needed. 5. Start using the camera to capture images or videos, or to view live footage. Note that the specific steps may vary depending on the brand and model of your WiFi endoscope camera. It's important to read the user manual or instructions that came with the camera to ensure proper setup and usage. 

This filter screws into the lens. 

The front lens of the lens is strongly curved and has a permanently integrated lens hood, threads for screwing are not available on the optics. The cap is placed over the lens hood and held in place by latches. I don't see any options for attaching a filter, and I'm not aware of any factory solutions or products from other manufacturers. 

Yes, the lens cover is magnetic also threaded, and the lens can be screwed on directly, or it can be magnetically attached by a magnetic attachment ring or filter, which is a two-in-one function; 

The Answer is Yes. You can use a pinch cap over most filters. ALL my lenses have a filter of some sort on them. I use to use a lot of "traditional" lens caps on all my old Nikkor lenses but putting them on and taking them off became a giant PITA, so I got a Pinch Cap as a test. I then converted ALL the lenses to Pinch Caps. Hope this helps.