Different Date Usage ?

[Data Glasses]

If i am watching youtube my date disappears at an alarming rate (mobile data plan) at the moment i am now streaming radio and it made me wonder if there is much difference between the two types of data usage ??

 

[Rhythm]

Video uses a lot more data than audio.

 

[Data Glasses]

Video uses a lot more data than audio.

That's what i was thinking although i get buffering ,,, thanks