posted in apple section earlier http://community.o2.co.uk/t5/Apple/new-voip-service-to-be-launched-for-iphone-users-by-telefonica/m-... as only available for ios at present
you can register at the official site http://www.tumeapp.com/ for other os phones
I suppose the appeal of this one for the moment is iPhone only, as the owners do like to feel they are exclusive.
As exclusive as sheep can be!
Sent from my iPhone
Prepare for the wrath of the Apple god to descend on you both
I also use Viber et al occasionally. I cannot see the point of TU Me as it stands now - no push notification! Both parties must be running the app for it to work. I have been running VoIP against my BB Talk number for years. On P&G. Don't have free minutes, don't use cellular for outging calls but have web / wifi bolt on. Have a geographic number (well quite a few) and free national calls on my BBT plan and always free VoIP - VoIP.
(PS I can trump adamtemp64 's sig - had my first cellular mobile in 1984 with TSCR before they became Cellnet.TACS - pre ETACS, car mount only. Still in loft!)