I think this is the main question, but I can not find it on my site or just fix it if I am wrong. I would like to ask if phone applications need to be connected to the Internet to use it? I need to understand and know this. Since I am torn between the two options, do I need to use my own code or phone gap. Thanks
No internet connection required! :) U just need to make regular HTML pages and save them in a resource folder. See Link how to configure: http://cleancodedevelopment-qualityseal.blogspot.in/2012/12/first-phonegap-app-with-android-using.html
You can develop PhoneGap applications that are completely autonomous without an internet connection. However, if you need to, you can synchronize data with the online service. Ultimately, it depends on your needs.
The phone gap can work with the Internet and without it. Using the Internet you can download it. In the absence of the Internet, you can enjoy creating applications for multiple platforms.
PhoneGap applications can receive all their content from the local device, which means that if you store assets in the application (the traditional way in PhoneGap is to place pages / images / etc. in the assets/www folder in Android), then the application will be able to work offline.
assets/www