at 5am when you're not using your phone, it's most likely the phone's OS or Apps syncing or the updating themselves. But for this to be the case mobile data must still be enabled on your phone. Double check that you have correctly turned it off in the phone's settings.
If you want to say thanks > click 'Kudos'. Answered your question? > click 'Mark as Helpful Answer' also.
It definitely has been turned off! My monthly allowance has been refreshed today but even now on my Virgin Media Mobile account when I go on my usage it is saying I've used mobile data.. it's gone from 250MB to 249MB when I haven't had it on all day as I've been connected to wifi (I know it's not much but if this is happening everyday then it'll soon be used up)
I'm sorry to hear that you're being charged for going over your data allowance. @AlexKid is right, it sounds like there's an update running in the background via your mobile data. Has this been investigated and sorted out for you?
If you are still experiencing a problem with this, please let me know. I'll send you a private message requesting further details. Just check the envelope icon at the top right of this page.
Virgin Media Forum Team
Need help changing SIM card? Find out more about activating your 4G ready SIM. 4G SIM Swap Help