So say, every Android and iPhone Devices, and may be Windows Phone 8 will come with a default hidden VoIP inside, if it is collected using LTE it will use that instead, the data would then be discounted over in the Mobile Network. This to act as a temp solution until VoLTE comes.

Like Jeremy Clarkson in Top Gear, How hard can it be?

The article also fails to mention why VoLTE is hard and takes so long. It said many different network operator has many different implementations. And even if that is true there is only a handful of network provider these days that network operator uses, Errisson, Nokia-Simens, ZTE, Huawei, and i dont know who else. ( Samsung?? ) They had to test again 3 others. Again how hard could that be?