When my device is on Wifi ,everything is fine,the Iframe can display . But when my phone is on 4G connection ,the iframe can not show;
and it shows Application Error The connection to the server was unsuccessful.(file://android_asset/www/index.html);
blow is my code in index.html :
When your phone is on the 4G connection, can you successfully load that address in a browser?
Retrieving data ...