An app that working with shellbox waterproof phone case product that can be connected by bluetooth, once you use the app connected to the product and wrap the phone in it correctly by the product instruction, you can take photo/film clips under the water. And here might be some steps using the app connect to the product:
1. Open the app, you might be asked for camera and record audio permission, to ensure you auth the app has the abilities to take photo and film clips;
2. And then you might be asked for bluetooth permission, to ensure the app has the ability to connect to the product, and once you have authed the permission and have turned on the bluetooth, and the product is around and activated, you can go to the bluetooth setting page to connect it, then back to app, it might take a few time to wait for it be connected with the app;
3. After the product is connected, you should be good to go to use it.