Almost everyone orders things online these days, which makes a text about a delivery problem instantly believable. That's exactly why it's such a popular scam format, it doesn't need to be personalised to feel relevant.
What it usually says
A small outstanding fee, often described as a customs charge or a redelivery cost, needs to be paid before your parcel can be delivered, with a link to pay it. The page the link leads to is built to look like Australia Post or a courier company's real site.
Real couriers don't ask for a card number to release a parcel that's already paid for.
How to tell the real thing from the fake
Legitimate delivery notifications usually reference a tracking number that matches something you're actually expecting, and genuine fees, when they exist, are handled through the courier's official app or website, not a link in a text. If you weren't expecting a delivery, treat the text as a scam by default.
What to do with it
Don't click the link. Delete the message, or forward it to 7726 to report it to your telco for free. If you have a delivery you're genuinely expecting, check its status directly through the sender's official tracking page instead.
A pattern worth recognising, not memorising
This scam shares the same shape as the toll text scam covered here recently: urgency, a small believable amount, and a link. Read that post too.