Finding phone numbers of 2 SIMS on Galaxy A70

[Tombar]

I have an EE Sim and a Vodafone sim in my phone. I know the number of the EE one, but have forgotten the Vodafone one.

if I go to Settings/About phone, sim1, which is EE, the wrong phone number is listed and the number listed is unobtainable.

sim2, Vodafone, is listed as Unknown

how do I find the number for Sim2 and how do I put the right number in for Sim1?

[Tombar]

OK. I've found the number for my Vodafone Sim by phoning out on it to my landline, then checking the number that called.

Now how do I get both numbers entered into the Galaxy A70