Hello, 

I note that data is still consumed when mobile data is turned off. Further analysis shows that on 3G, when you turn off mobile data, the PDP is deactivated. However, on 4G the default bearer is not deactivated. I presume this is due to the fact that when you attach to the 4G network, the default bearer is activated at the same time. 

Any insights on this please? 

Thanks.