Iphone 5s not able to connect 4G in india

Hi,

I bought I-phone 5S model A1533 from US . But now I am not able to connect to airtel 4G in india .

I checked in web and only after seeing mentioned that this model supports 4G in india I purchased it. But now I am disappointed .

I hear that there are many discussions among network service providers in India with government to allow international bandwidth in india also .

Based on that my question is will I be able to connect to 4G with my handset atleast in future ?