I use a fairly simple Spigen Liquid Crystal case on my galaxy S8+ which works with most things, but I find I have to remove it to connect the DXO One.
You’re right, attached cases should not cover the area around the connector. It will only work with one that has an open bottom. Any other case that has plastic between the connector and the smartphone will prevent it from connecting. I will keep you informed as soon as we have some cases to recommend for Android devices.
Given that the Galaxy S8+ is quite slippery without the case, it would be nice to have one that helps protect it and keeps it from sliding off my lap.
Thank you for the prompt repsonse.