Problem with data usage

[Angelica264]

I've just top up and immediately checked my data usage and it showed is have 7.1 GB left of 8 GB. How is possible I've already used data in less than a minute when even my data is off? 

[Katie_B]

Hello @Angelica264. 

Welcome to the EE Community. 

Does the same report when you text AL to 150?

Katie.