I keep receiving text messages of:
Hello! You've used up 95% of your Promotional Mobile Web for this month. To change your plan or get add-ons, go to ...
I don't need to know every time I use some data.
How do I turn these off?
Welcome to the community and thanks for posting.
I'm afraid it's not possible to disable these as they're in place to warn customer's and prevent them from running up a big bill.