Hello @Jiawei Wang,
If you have mobile data on, your device can connect and use mobile data even if no app is opened.
The consumptions made in roaming, are shared with NOS by the service provider that your device connected to.
Share with us any other questions you might have.
Thank you
Thanks for your reply. But I was at the hotel with the Wifi on at that time.
I reckon my case is similar with this case
If the bill can not be correct, is there other solutions? To pay for a 61-euro bill for things I did not use
is too much.
Best
Hello @Jiawei Wang,
Thank you for your message.
We suggest that you check through your device’s setting for more information regarding what app or system did the consumption of mobile data in that period.
Thank you