No Caller ID?

[CharlzLock]

Been struggling for a week now to no avail.

All incoming calls still showing as no caller ID, even from landlines.

I have even rang off my work mobile, which doesn’t hide caller ID, and it still shows up with no caller ID and is getting very frustrating.

I have a new SIM card, I have even tried another device. I have reset my phone to factory (apple recommended) and I am all out of options.

O2 can’t see a fault so wondering if anybody has any advice? As it’s getting increasingly frustrating and I am close to having to cancel my contract if I cannot see who is even calling me.

Any advise would be grateful

[MI5]

@CharlzLock 

You'll need to call customer service.

It's a setting on your account that needs enabling.
Numbers here Guide: Coronavirus Community Help and Support 
When it comes to the reason you are calling stay silent for 15 seconds and you will be taken to the keypad options.
Press 2 for Everything Else
Press 5 for More Options
Press 7 for Anything Else which will put you though to someone.
Say "Upgrade", "Lost/Stolen" or "Fraud" if you have to, to get put through to someone.
8.00am is the best time to call if you can.

[CharlzLock]

Thank you for the reply @MI5.

I have been dealing with O2 all throughout this morning and they’re adamant it’s a faulty device which it isn’t, as I have another iPhone sat next to me which has the same issue when transferring SIM card.

They can only keep offering me a replacement SIM card, even though I have already had a new SIM replaced by them, so I guess I’ll just have to change network.

Thank you for taking the time to respond.

[MI5]

Sorry they let you down mate, but not uncommon these days sadly.