Post paid plans are credit. It’s allowing you to consume goods, then pay for them after the fact.
Sure, it’s short term credit (sub 30 days), but it’s still credit.
Sure, it’s short term credit (sub 30 days), but it’s still credit.
However since all of the OP's examples involved credit (car rental post-pay, phone usage post-pay, etc.) then in those cases trust===credit score. Without a credit score, you're basically asking someone to trust blindly that you'll pay back a debt since there's no track record of your ever paying back debts.