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O2 Sim in a new phone

MM2
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HI

I've transferred my o2 Sim into my new phone but the network is now showing as Giffgaff.  Any idea what is happening?

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MI5
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@MM2 

Check your apn is set to O2.

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.

Currently using:
Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)
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MM2
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Network selection list is offering O2 as a choice but I had a strong O2 signal on the old phone in this location.

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MM2
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Sorry - is not offering O2 as a choice.

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MI5
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@MM2 

You are on automatic network selection?

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.

Currently using:
Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)
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MM2
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Automatic selection shows Giffgaff.  The phone is working normally making and accepting calls etc.  If I try manual selction of network O2 is on the list of available networks found.  Contract is with O2.

I really appreciate your help.

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MM2
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Sorry again  is not on the list

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MI5
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That's really weird @MM2 

Daft question, but you have got your O2 SIM in?

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.

Currently using:
Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)
Message 8 of 12
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MM2
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Yes. It came out of my old O2 phone. I've just double checked and it's definitely O2. But the phone reports having a Giffgaff SIM in
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MI5
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@MM2 

I can only guess that you don't have the O2 carrier file installed on your phone for some reason.

Is it an iPhone?

Settings >general >about. And see if you get promoted for the O2 carrier. 

If not, try connecting to iTunes on your pc.

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.

Currently using:
Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)
Message 10 of 12
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