I always turn Bluetooth off when not using it as it uses considerable battery. After Doing this with a flic button attached, I have found no other way to get the button working again than to remove and reinstall the flic app. Before doing this the flic button says out of range, and I have been unable to get rid of this status other than by deleting the button. After adding the button again as soon as I click it, it shows me an Upgrading firmware screen which gets to about one o clock and then just hangs. Reinstalling the app fixes that, but this is rather tedious.