Is this a scam text or genuine?

[Timothytom]

I received the following - “Your verification code is :xxxx. O2 UK.” This text came From 02 UK 

The x’s are actual numbers but redacted for obvious reasons. I have changed my password and security questions etc and the codes from them came to the exact same text message chain but a totally different format, two messages and were 6 digit codes.

I spoke to CS and they sent a four digit code to test it but that came to 02UK (missing the space)

anyone know what’s going on here?

[MI5 · Accepted solution]

@Timothytom 

Scammers trying to gain access to your account.

It's a well known scam.
Block the number and report it free to 7726.
DO NOT follow any links or enter any information.
O2 advice here https://www.o2.co.uk/help/safety-and-security/phishing-and-smishing-advice
https://www.actionfraud.police.uk/
How to block a number:
https://www.samsung.com/us/support/answer/ANS00062352/
https://support.apple.com/en-us/HT201229

[Timothytom]

There is no number to block. It’s come through as 02 UK

[MI5]

Just forward to entire message.

The techs can interrogate the sender from the metadata.