How do I find old call history

[Unhappy32]

I need to find a number that called me in June 2016.  How do I find my old call history

[Cleoriff]

@Unhappy32 

Unfortunately you can't. You can find a record of calls you made, but not received.

[MI5]

@Unhappy32 

Records only go back 2 years that you can access directly, but only outgoing.

You could try calling O2 but I'm not sure even they can access that far back.

Numbers here Guide: Coronavirus Community Help and Support 
Or advice from an O2 Guru regarding a way to get through:
If you call 202, when it comes to the reason you are calling stay silent for 15 seconds and you will be taken to the keypad options.
Press 2 for Everything Else
Press 5 for More Options
Press 7 for Anything Else which will put you though to someone.
Say "Upgrade", "Lost/Stolen" or "Fraud" if you have to, to get put through to someone.