@Wayne-TP I try it but same thing. All is clear to connect this P110 to my iPhone (I've got already many P110 at my home) but connected or not, when I whant turn off, I've got a click sound but...

Hi, My P110 can't be turn off anymore, manually or with the app. When I try it (with both methods), the led turn OFF with a click sound like the state is good but the power is ON... I reinitialized...