Second, the functions only work I'd you download an app, which you have to override a Samsung alert to access.
Third, the app is unreliable and unpredictable, it locked me out of my phone for several hours before I eventually managed to deleted it.
Also, the auto sleep/ wake function just does not work!
All that said, I am keeping the case because, a, I really can't be bothered returning it and b, it is actually quite a nice case lol!
Hope this guides others...