Vodafone and Airtel Volte not working in Asus X00LDB

[bhushandeore29]

Model Name: Asus X00LDB
ZENFONE 4 SELFIE
SERIAL NO.H9AXJA025786K7L
Build no.15.0400.1910.518-0

[raizada_saurabh]

bhushandeore29

Model Name: Asus X00LDB

ZENFONE 4 SELFIE

SERIAL NO.H9AXJA025786K7L

Build no.15.0400.1910.518-0

Vodafone and Airtel Volte not working in Asus X00LDB

I have Zenfone 4 dual selfie and model ASUS_X00LD phone. Volte is not working my phone.