Overnight data usage ?

My phone appears to be using lots of data overnight (around 3am) quite regularly.
I am on wifi at home so no idea why this is happening. It is pushing my monthly usage right up to my limit (10GB), which should never happen as with all previous suppliers I’ve used around 4-5GB.
Anyone else had this ?
Thanks

I just came on to ask the same question! Let's hope we get some answers.

S80MJB Same here as well. I would expect my Data allowance to be useable data.

The exact same is happening to me that's why I'm here. Has anyone got any answer or reason why this is happening?

Same problem here not sure what to do this didn’t happen with my old provider . I’ve just having to make sure to switch data off before sleeping and turning background refresh off and data saver for certain apps but I don’t know what lebara could do

It doesn't matter if you turn off data at night, I think it's to do with data you've used the previous day and it's just how/when lebara and vodafone apply it to your account. Source: Google search.

I’ve done this which was on a separate post

I think you've posted this in the wrong thread mate