What Is Phonecheck Certification? And Why It Matters When Buying a Refurbished Phone

You wouldn't buy a car without a roadworthy. Why do it with a phone?

Every year, thousands of Australians buy refurbished phones from online marketplaces. Some get lucky. Others end up with a phone that looks fine on the outside but has a failing battery, a dodgy speaker, or worse, an IMEI that's been blacklisted.

The problem isn't buying refurbished. Refurbished phones are one of the smartest ways to get a quality device without paying full retail. The problem is buying untested.

That's where Phonecheck certification comes in. It's the most widely used certification platform for refurbished devices, and it's the standard OzMobiles uses to test every single phone before it goes on sale.

This article breaks down what the 80-point Phonecheck diagnostic actually tests, how it compares to buying uncertified from Marketplace, and what OzMobiles adds on top to make sure every device is ready to go before it reaches you.

What is Phonecheck?

Phonecheck is the industry's leading certification platform for refurbished devices, used globally by carriers, insurance companies, trade-in programmes, and professional refurbishers.

What makes it different from a technician simply turning the phone on and checking a few things? Automation and consistency. The software runs each of its 80 diagnostic checks in the same order, with the same pass/fail criteria, every time. A phone tested on a Monday morning gets the exact same scrutiny as one tested on a Friday afternoon. There's no room for shortcuts or "that looks fine" judgement calls.

The platform also handles certified data erasure to ADISA standards, the same level of data destruction required by government and enterprise organisations. When OzMobiles wipes a device through Phonecheck, previous owner data isn't just deleted from the surface. It's irreversibly removed.

What the 80-point test actually covers

The 80-point Phonecheck diagnostic isn't a checklist someone ticks off by hand. It's an automated, structured test that works through every major component of the phone in sequence. Here's what it covers.

Buying certified vs. buying from Marketplace

On paper, a Marketplace listing might look identical to a certified refurbished phone. Same model, same storage, sometimes even a lower price. But what you're actually getting is completely different.

In Australia, around 150,000 phones are blocked every year through the AMTA lost and stolen register run by the Australian Mobile Telecommunications Association. If you buy a phone that's been reported lost or stolen, it gets blocked across all Australian networks and becomes unusable. OzMobiles checks devices against the AMTA database and global blacklists before it goes on sale. On Marketplace, that check is entirely on you, and most buyers don't think to do it until the phone stops working.

The price difference between a certified refurbished phone and a Marketplace listing is often smaller than people expect. But the difference in what you're actually protected by is night and day.

How OzMobiles goes beyond the test

Phonecheck certification tells you a phone works. OzMobiles grading tells you exactly what condition it's in.

After every device passes the 80-point diagnostic, OzMobiles technicians assess its cosmetic condition and assign one of five grades. Each grade is clearly defined so you know exactly what to expect before you buy.

Every refurbished grade is 100% fully functional. The grade reflects cosmetic condition and battery floor, not whether the phone works. That's already been guaranteed by Phonecheck.

Frequently asked questions