Joyn is so far available only in Spain, although it is due to be launched in Germany in October and South Korean operators and others are expected to start RCS-e services soon. It will spread gradually, as people replace their phones with joyned-up devices, which should be on sale before long. All the leading handset-makers have agreed to embed joyn—with a big exception: Apple, which happens to be an OTT provider too.
Meanwhile, the clock is ticking.
I think it’s too late for Joyn. We are in a point that we want to communicate through every device we are currently using (phone, tablet, pc, TV or else (?)). Apple would be a fool to agree to Joyn’s plan since it’s the pioneer who got us in this point. (Thank you!)
Soon we will only need a data plan and that’s an option that the mobile operators have to start to explore.