Hello @Louie1990 , 

welcome to our community! 

What exactly do you mean with a data reset?

A reset of your data volume in your contract?

For example: We have a 500 MB App Bonus that you can book monthly to your tariff.

There are a few tariffs that cannot add the App Bonus, like the o2 Free Unlimited Max.

Additionally you can book data options when you click on the little “+” in your app where your data volume is placed.

Best regards, 

Manuela