on 28-03-2020 13:04
Yes you can have more than one account (contract and PAYG).
I 'think' you can swap the sims between the two phones. Best way is to get a PAYG sim and try.
However remember you will STILL be paying for the contract each month, regardless of whether you use the PAYG sim.
on 28-03-2020 14:44
You can't top up a P&G phone with your monthly account sorry