lumia 640 xl LTE activate volte for reliance jio

Sir, I heard lumia 640 xl LTE, will support volte, in your site telling it must be activated from service provider,

In India reliance jio , is telling lumia 640xl LTE, has some OS problem, so it must be activated from Microsoft side,

As you are a Microsoft big windows OS , you must show interest in your product lumia 640 xl LTE to activate volte, and talk to reliance jio Telecom company To promote lumia 640xl mobile to get 3 months preview offers,

You can not seat quite, around 16 mobile company tied up with reliance jio, you must show interest, not reliance will show,

As we feel Microsoft company is wast ,