Incoming calls show no caller ID

[JD26]

Hi,

I have an issue with all incoming calls showing as no caller ID or unknown. It has happened since I changed my iphone and contract with O2 last week. Numerous phone calls to O2 have got nowhere so far and multiple sim swaps and phone resets have not worked. I can see online others have had a similar issue but can’t seem to find a solution anywhere. Any help appreciated. Thanks 

[MI5]

@JD26 

Some have found that turning off 4g and wifi calling have helped whilst others have needed to ask O2 to reset CLID (call line identity) on their account.

Message them on Social Media. Facebook (https://o2uk.co/O2CFB) , Twitter (https://o2uk.co/O2CTW) or Instagram (https://o2uk.co/O2CIG) or give them a call on 202 or 0344 809 0202 (contract) 4445 or 0344 8090222 (PAYG)

[JD26]

Thanks for this. Have contacted O2 again and waiting for someone on the technical team to try and sort. Could take 5-10 days I was told 

[JD26]

A month on I still don’t have a resolution to this. Apparently the technical team have been working on it but there’s no timescale on a resolution. Seems to be effecting others too. O2 eventually respond on DMs but only to say someone will try and sort which then doesn’t happen. Beyond frustrating 

[gmarkj]

Unfortunately you'll have to keep going with customer services @JD26 

I'll see if I can dig out the thread but someone had to get o2 to disconnect their number and then reconnect it so that it worked.

[JD26]

Yeh, will keep going thanks. I think I’ve seen a couple of threads along those lines and sent it to O2 as probably a solution but no joy yet. Realistically, I just don’t think they have enough technically trained staff to deal with issues