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'Unknown' callers on new SIM card

I recently switched to O2 from Plusnet and only got it to work by using a 4G SIM card instead of a 5G SIM card, using a Huawei P30 Pro. But now all callers apper as 'Unknown' (nor do they appear with their phone number), even if they are in my addres...

Resolved! Can’t get internet whilst roaming

Hi, I am roaming in Portugal and and can’t connect to internet via data connection. How do I fix this ?

Non connecting to the o2 only Wi-Fi

My phone number (REMOVED) is not connected to the O2 network

Wi-Fi calling

Can’t turn Wi-Fi or 4g calling on

Signing in to My 02 account

When I try to sign in to My 02 account it asks me to download ….this never happened before and seems to coincide with notification od D/D system

My account was set up on a non existent email

Hello, I have recently received an O2 SIM card from virgin media but they have used an email that does not exist so I am unable to log on to my O2 account to see any bills and would like to know if there is a way to change this as I would like to get...

Signal

My phone shows as having signal and lets me make and receive phone calls but then within a few seconds the line cuts out. It has been happening this for a few weeks now!

Apple Ultra

Hi there. I have no data on my Apple ultra. I have spoken to O2 on numerous occasions and other than getting pushed from pillar to post I get nowhere. I can receive calls but there is no data whatsoever. I’ve tried everything. I’m sick of holding on ...

Resolved! Cannot Can't send message to O2 - error 0

Hi I have a pay monthly phone and need to add the Travel bolt on for my holiday next week. But when sending the message to 23336, I get the Cannot send message to O2 - error 0 code. Any ideas how I can getbn round this?Thanks in advance.Roy

Text

Hi there a can't receive security txt message from my bank in Poland

O2

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