New sim

[positive]

Hi, can anyone help please. I have put my new sim in my phone. Its 5G but I think my phone is

old and doesn't support this. No real problem.

My phone shows no mob number and disconnected with my wifi on. 

It only shows connected on mobile data but still no phone number shown. I have phoned o2

and they say everything is ok at there end.

Thank you in anticipation

[Bambino]

@positive 5G sims are backward compatible and should work in an older phone that only supports 4G. See if the links below help any:

How can I sort out my network issues? - o2uk

Why do I have poor coverage indoors? (o2.co.uk)

You can also reach O2 via social media for assistance:
Facebook (https://o2uk.co/O2CFB), Twitter (now X) (https://o2uk.co/O2CTW), or Instagram (https://o2uk.co/O2CIG)

[MI5]

@positive 

Your phone number will not show on the sim when using an Android phone with O2 unless it's the original sim that came with your contract.

O2 don't push numbers to replacement sim cards.