I have a web app that I am trying to load in my React Native app while it is offline. Based on some older SO questions, it does seem possible. However, I also need to:

1. Dynamically load roughly 2 MB of JSON data into the web app in the webview.
2. Access Camera, file system, and geolocation in the web app.
3. Send roughly 2 MB of JSON data and multiple photos back to the React Native app to be saved locally.

I know that iframes and the web view can send messages but as I understand it, that’s generally used for sending URLs or other flags. Are messages a reliable way to send large amounts of data into the web app?