nope I don't think so its any related upgrade ..have you upgraded your sim card from Vodafone store ?if yes try LTE in another area.
I might apply for 4G card today.. Assuming vodafone center nearby has 4G SIM cards.
And I never got the SIM. This doesn't apply to corporate connections I guess. The Authorized Signatory of our company is an AH and I try to avoid interacting with him.So i went via the process in the below link.
Vodafone 4G in Mumbai - Experience High Speed Internet on Mobile
Got this message. I suppose they'll send it via courier?
Lenovo A7000 - Full phone specifications