Mobile Broadband In J&k

I am planning to visit J&K and require internet access, but from what I have heard from friends is that like postpaid mobile phone connections, internet connections work the same way too, as in it has to be a postpaid internet connection. Can someone please confirm this information for me whether it is true or not.
Also advise on which ISP provides the best coverage in J&K?
I dont think that any prepaid connections work in J&K be it mobile or internet. Its only postpaid connections which would work.