O2 customers have been urged to be aware of scam calls and text messages from fraudsters attempting to steal personal details.
Scammers have been trying lure customers in by offering bogus "discounts" on phone bills, claiming customers are eligible for 30% or more off their bill. The fraudsters operate by sending a text to customers with a one-time passcode and ask that you read it back to them.
However, customers are being warned to avoid this. O2 has confirmed this is a scam and it would never ask you to read back a one-time passcode.