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, K&F Concept Baby Monitor can only support 2.4G Wi-Fi, please ensure that your router supports 2.4G Wi-Fi. When pairing a camera, please choose a 2.4G Wi-Fi on your phone too. You can go back to using 5G Wi-Fi or other networks on your phone after a successful pairing. 

I did no use the leather pouch. I purchased a Neewer shoulder pouch. It held everything and easy to get in and out. I carried the 10ND and a 3 ND soft graduation filter.