So if I turn the 4G off on my new smartphone Samsung Galaxy S6 and have only my WIFI on. Will I still get charged if I go on the Internet if I have my WIFI on and the 4G being turned off?? And how do I turn off the mobile data?? I completely really really new to smartphones in general because the Galaxy S6 is my 1st proper smartphone so I am really not sure about this..... I got the Samsung Galaxy S6 through EE!