The Teamspeak3 FAQ has the following info but I can't get it to work on IOS. Nothing in the FAQ indicates it doesn't work on IOS.

ts3server://ts3.hoster.com?port=9987&nickname=UserNickname
&password=serverPassword&channel=MyDefaultChannel& cid=channelID
&channelpassword=defaultChannelPassword&token=Toke nKey
&addbookmark=MyBookMarkLabel

When I encode the URL on the webpage the app opens but, it doesn't add a bookmark or connect to the server as it does on PC. Is this a premium feature?