Mobile Broadband data doesn't roll over from one month to another. Any data you haven't used by the end of the month won't be carried over. What happens if you run out of data? If you've run out of data, we'll send a text to your Mobile Wi-Fi to let you know.

How long does three data last?

A 3GB data plan will allow you to browse the internet for around 36 hours, to stream 600 songs or to watch 6 hours of standard-definition video.

Does rollover get data?

Data rollover means having your unused data roll over from one month to the next. So, if for example you have a 4GB data allowance and only used 3GB one month, the next month the 1GB that you didn't use would be added to your allowance, giving you 5GB to play with.