We would like to show our website in our mobile app using the iFrame, at some point a user can get an option to upload a document from the local storage. 

However, with iFrame we only see camera but not local file storage once we click on the upload button to choose the file.

Has anyone ever faced this issue?

Did you give access to the local storage? Does your app have the right permissions?

Use this plugin to give access: https://www.outsystems.com/forge/component-overview/2040/android-permissions-plugin