Get 5x data for up to 3 months on our selected Big Bundles, then reverts to standard data allowance. Offer will be applied automatically for first-time customers. Existing customers with an eligible Big Bundle must text “5XDATA” to 2424 from their O2 Pay As You Go phone to activate the offer.
How does roll over work? Let's say I don't use any data, I will get 12gb next month? Will it roll over again the next month? Or reset back to 6gb?