Vodafone India users please send "4G CHECK" to 199. I received the following reply
"Dear Customer, you can continue to enjoy Voice & 3G services on Vodafone SuperNet. Vodafone SuperNet 4G is launched on a superior 2100 MHz band and your currently handset does not support this band for 4G"
25 days ago
I had the same problem initially when i bought this mobile. On their website it is listed in supportive devices but when you sms to verify it says not supportive.
Actually in the vodafone database the handset corresponding to your number is not updated.
You need to contact with them after that you should get 4g LTE support
I am using Vodafone with VOLTE on 7 plus (Mumbai region)