Keep my old phone number

[MaxineMilligan]

I’ve got a new phone but want to keep my old phone number I’m still with o2 

[TallTrees · Accepted solution]

Hi there @MaxineMilligan 

Put your sim in the new phone

If it doesn't fit ask for a replacement. 

 Contact O2 customer services 

Guide: How to find help & contact O2 

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[Bambino]

@MaxineMilligan If your old phone was 4G and you're in a 5G area or frequent 5G areas you might want use the new sim that probably came with your new phone. You can swap it yourself if you follow this guide: 

SIM Swap: a mini guide (incl eSim) - O2 Community.

If you're not comfortable doing the swap yourself, call into an O2 store, if you have one nearby, and they'll do it for you. Be sure to bring photo ID with you.