data use includes...

[0nicknames]

My account says that I have used half o my data alredy less than a week into this billing period.  What am I doing that uses data?

[hairbag1]

@0nicknames 

log in to your account using the mobile app; you should see Usage Breakdown....tap that and you see your plan data usage / remainder. 

[hTideGnow]

hi @0nicknames 

how much data you have in a month? and how much is "half"?

you should first login My account, check the usage meter and see what it shows

also, check your Mobile data usage and see which app used it.  If you have Android, you can change the cycle start date on the data usage page and it will tell you how much you used in this cycle (for current cycle start date, please confirm with your My Account).