lumia 640 xl LTE activate volte for reliance jio

"noobs"  used because it may lock sim . ##7820# to make device sim free ,its already unlocked ,what the reason to enter any 20 dig no ,solution is not that simple,for jio its simple ,they can make sim application for windows phone that can enable volte & all,still i am trying to provision that but not succeed yet

hello dude I had 950 XL mobile same VOLTE is not working is there any way to enable it

if so plea provide the link or procedure to enable it

JIO sim in 2nd slot net is working but no calls and SMS please help

volte is only available for at&t models only

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 ,

Hi , 

in future we remember Microsoft as a cheater company who destroyed Nokia and Lumia phones and cheated worldwide lumia users.

when open market phones do not support volte, microsoft should not advertise it as volte phone in the open markets. first you check your website for specifications and reply. when they cant provide the service they should not say they have it. VOLTE dont require operator specific implementation for open market phones . VOLTE implementation can be done from changes in microsoft firmware, which microsoft is not doing. you people think the public are dumb and post some random replies to divert the issue.

as one of the member responded the following has to be done by microsoft for open market phones.

https://www.microsoft.com/en-in/mobile/phone/lumia650-dual-sim/specifications/

Call management

Call types: Audio call, HD Voice call, Conference call, Skype video call, Skype voice call

Call management features: Speed dial, Voice mail, Dual front microphones, Seamless upgrade to video call, Front facing hands-free speaker

Regards

gopi

One of my friend uses Xiaomi Mi phone.He told me that it was simply a LTE phone initially but is now VoLTE phone after a firmwire update given by Mi...yes it's provided by Mi,not by Jio.I infact see the link of that update and it is from Mi,not from Jio.But from a window central website article(2015 published,link given below) you will come to know that in 2015,Microsoft had already updated Lumia phones firmware(check from "about" in your phone)to a version which enables Lumia 640,640xl to VoLTE,HD voice calling,Wifi voice calling in 2015!!!Now who is telling the truth...!!??If Microsoft already updated firmware,then why not we able to do VoLTE calls!!??Where is the problem..!!??

Link....:-

http://m.windowscentral.com/microsoft-enabling-native-wi-fi-calling-hd-voice-lumia-640