How can I access the browser console on Opera Mobile on Android? How can I access the browser console on Opera Mobile on Android?

Browser console = something similar to the developer console window on Chrome, when pressing the keyboard shortcut Ctrl Shift J
You can try this app that I developed it may help you, 
F12 | Browser Console for Mobile Devices
But if you are developing something and want to access Console for it, then following the steps in following link will be a better option
https://developers.google.com/web/tools/chrome-devtools/remote-debugging