Call history

[Sadoty]

How do I retrieve my call history if it has been deleted 

[pgn]

As PAYG customers do not receive monthly bills, it is not going to be possible to retrieve your deleted call history, @Sadoty.

If required for a legal case, a court can request O2 release this info - but that is an exceptional circumstance.

You could go down the SAR route, but it can be a lengthy process, and not guaranteed to give you what you seek: 

https://www.o2.co.uk/help/safety-and-security/how-to-get-a-copy-of-the-information-we-store-about-yo...

Good luck!