How often do you need to top up a PAYG SIM before they cancel it?

[Cromulent]

I have a couple of PAYG SIM cards which are basically just for receiving calls. I hardly, if ever, make phone calls from them. How often do I need to top them up with a token £5 to £10 to stop them being cancelled? The networks are o2 and EE.

 

[Cromulent]

I got a message after a year of not paying anything on.

Said they'd cut me off if I didn't give them more money.

Cool. Thanks for the information.

 

[Cromulent]

https://kenstechtips.com/index.php/payg-inactivity-account-termination-and-credit-expiry

Thanks for that. That is a really useful link.