So I was on call and my friend asked me to watch a youtube video and as I was getting ready to hang up to search for the video, I noticed that youtube app opened and loaded videos while I was on call. So I kept talking and searched for my video and played it, all while I was on call, and I checked my wifi was turned off. I have just recently switched to S3 so I may not know the whole story about this device's capability to do simultaneous voice and data, but last time I checked, Sprint/CDMA didn't support it without LTE. Although I am in an area where LTE is slowly lighting up, but I didn't see any "4G" icon. All I saw was "3G" icon on my device while I was accessing data and voice simultaneously. Has anyone else seen it too? Or is this a feature from Sprint/GS3 that I just didn't know about?