All Incoming calls show as Unknown

[Maddy12211]

Since I upgraded my sim card. All calls I receive are 'caller unknown' even when numbers are not withheld. Seams to be a common problem, tried changing sim cards several times including 4g & 5G sim cards, tried resting network connections, tried 4G calling off. Called O2 customer service many time they are unable to find a solution. Can anyone please help.

[MI5 · Accepted solution]

@Maddy12211 

The only fix for this is a network disconnection.

Customer services will need to escalate the issue internally for you.

[Maddy12211]

The request was escalated on 07/09/23 now its 26/09/23, I have called them today and requested a network disconnection, I will keep you posted. Thanks for your reply

[Maddy12211]

Thank you very much a ***Network Reset*** did the trick

[MI5]

You're welcome @Maddy12211 

[PEPY]

Hi @Maddy12211 was this done by someone from O2 or you did this yourself? 

[gmarkj]

o2 customer services have to do the network reset @PEPY - basically your number is disconnected temporarily, and then reconnected.

Call 202 or 0344 809 202 if you are on contract, or 4445 is pay as you go.

Best time to call is 8am UK time.

Alternatively you can call 0800 902 0217 using Skype for free.

Guide here Guide: A Guide to Skype

Or you can message O2 on social media on Instagram https://o2uk.co/O2CIG), Facebook ( https://o2uk.co/O2CFB) , Twitter ( https://o2uk.co/O2CTW). 

[Maddy12211]

up date problem happened again this time call drops, and poor data connection does to 3G, rang customer service x3 call dropped called 0344 809 0202 spoke to South African call centre they didn't have a clue about a network disconnection they said if i do this i can loose my number and be charged for the remainder of the contract. Totally useless I have escalated aging but I will be leaving 02 at the end of the contact!!! 

[Maddy12211]

Also a network disconnection results on extra charges. I was informed that they charged me a day extra but they refunded me that also said there is a risk that the my number could be lost. 02 if the worst uk network. 

[Oxonian]

@Maddy12211 

>> 02 if the worst uk network. 

That's your view and, in the light of what you have been through, it does not surprise me. But there are other UK networks with Customer Service that is absolutely grim, so if you do leave as you mentioned in your previous post, please don't assume that Customer Service will be better elsewhere.