Did you download the vierra app for iphone to your tv? When you go into your tv, go to the app store and download that first.
At this time there is no Passcode for bluetooth I am sorry to say.
The only way you can connect at this point is through VGA, DVI and or HMDI
I have found out you can use your ipad or android tablet to tv using Miracast but it is difficult to use.
Also you can go here and it explains the reason why bluetooth doesn't enable even though the tv says it does:https://www.soundtouch.com/CommunityDetail?_escaped_fragment_/feedtype=SINGLE_QUESTION_DETAIL&dc=SoundTouch&criteria=ALLQUESTIONS&id=90633000000GrYpAAK
Usually you download it through your tv to your tv screen. and the tv will say viera remote on your tv and it can go through your iphone.
Yes I do see that now. I am sorry that you are not able to get the bluetooth at this point. I have even talked to them and they said you can't I am sorry to say.