Best answer by Mohammed
Every Pay-Monthly plan should come with some data on it.
Though, there was a variant of 150 minutes, unlimited texts and 500MB also.
If you log into the iD app Kate, you should be able to find how much data is available on your plan to use that month.
If there's none-left, you can look at changing to a higher plan if you think it's a requirement, or purchasing an add-on as a one-off if you won't be needing extra data all the time.