I have been using Zoiper on an Android phone for a while now, but I cannot find what button to use to connect a bluetooth headset. The bluetooth button on the GSM part of my Android phone connects easily. I have looked through all of the Zoiper setup screens with no luck. I wondered whether this is only a Premium option but the options shown under premium do not show bluetooth headset connection. Considering the logo used by Zoiper on all versions has a guy -wearing- a headset, I figure I must be missing something obvious here.