28-11-2019 12:19 - edited 28-11-2019 12:20
No you can't unless you want to lose one of the accounts. Moving credit will disconnect the phone you move the credit from.
on 28-11-2019 15:32
No, it makes no difference.
Credit can be transferred from one PAYG phone to any other on O2 but the one being transferred from will be disconnected.
OnePlus 6 (O2 & Sfr), Z3 Tablet (Three UK), iPhone 8+ (EE)