Can I watch cable source simultaneously while using Web browser in Samsung Smart TV?

Yes, in Samsung TV you can use the PIP (Picture in picture) feature to simultaneously watch the last viewing source while browsing web. The product has two built-in tuner, which allows PIP to function. This means you can simultaneously watch the last viewing source in sub-screen on which Smart hub is accessed and web browser in main screen (available in Smart Hub). 
 

(PIP in Web browser window) 

Click here to know how to turn on PIP while using Web browser in Samsung Smart TV. 

Click here to know how to relocate your PIP sub-screen while using Web browser in Samsung Smart TV.

NOTE: Web browser will be displayed on the full television screen and the last viewed source will be displayed in a small inset window.