Your requirements are a little bit murky, I’m not sure I follow.
Phonegap, to the best of my limited knowledge, is a way to use web tech to make what is basically a packaged native app. The only real pro to that is that it can be distributed as an app in an app store, and that it can interact with the device - which you say you don’t need.
The negatives of Phonegap are that it’s somewhat more likely to be slow.
Why do you want to use Phonegap to start with, and not just make a mobile version of your site, or better yet, a responsive design? Do your leads require that it be a “native” app for certain phone platforms?