Topped up and data disappeared?

[chrisbca]

So yesterday I made a $30 add on for 1GB of service. I don’t have any apps running in the background and I was connected to WiFi straight after. I received a text this morning stating I’ve used 95% of the data. Please help?

[srlawren]

@chrisbca how to tell what apps or services are using up your data:  on an iPhone, or on an Android phone.