The Right Tech to Certify a Used Phone For Sale

Certifying used phones isn’t just best practice, it builds trust and boosts sales. In this guide, we’ll show you how to use M360 to generate professional reports, labels, and CSV files that document your test results and device information.

July 31, 2025

Before selling a phone or tablet, you probably run some tests to make sure it works. Great, but here’s the problem: testing alone isn’t enough.

You need proof. You need something that shows the buyer:

✅ What was tested
✅ What the results were
✅ What condition the device is really in

Without that, you’re asking buyers to “just trust you” — and in today’s market, that’s a fast way to lose credibility, trigger returns, and lose revenue.

The used phone market is booming. Customers are getting smarter. They know what to look for, they expect transparency, and they’re no longer buying blindly. If you can’t show clear proof of what’s been tested and what condition the device is in, they’ll move on fast.

And it’s not just customers. Regulations are evolving rapidly. Platforms are cracking down. Many now require certification and traceability before letting you list or ship a device. If you’re not ready with proper documentation, you’re already behind and at risk of being shut out.

That’s why M360 isn’t just a nice-to-have. It’s a must. In this post, we’ll show you how M360 helps you certify with reports, export device data, and generate labels, all of which prove your devices are tested and ready to go. Let’s dive in.

Certify with Reports

Reports are the backbone of trust. Without one, you’re just hoping your word is enough. With Certifications, you’re showing exactly what a device went through and giving your buyer peace of mind.

Every M360 report includes:

  • Detailed test results
  • Functional grading
  • Device information

It’s all on one clean page, fully customisable, and shareable online. You can choose what to include, adjust layouts, and generate reports that match your brand and business needs.

Buyers, marketplaces, and partners want certified proof. M360 gives you that – fast.

Certify with M360 reports, an example.

Mark with Labels

What good is a test report if it’s buried in your database?

Labels bring your certification to the real world. Stick one on the back of each phone, and anyone – your team, your buyers, even couriers can instantly see what’s been tested and certified.

You can pick from M360’s ready-to-use templates or create your own with our built-in label designer. Whatever the shape, size, or style, you’re in full control.

Each label can also include a QR code that links directly to the full certification report. That means customers can scan and verify the device’s condition for themselves on the spot. No guesswork. No doubts.

This kind of transparency builds trust, boosts your brand, and gives your devices a clear edge over uncertified competitors.

Stop guessing what’s in your stock. Stop digging through spreadsheets. Stop making up statements about devices when customers ask. With M360 labels, every device tells its story, clearly and professionally. It is a sales tool for your business.

Keep track with CSV

Now, let’s talk scale. If you’re moving dozens, hundreds, or even thousands of devices — you need a system.

CSV exports in M360 are built for this, consisting all information for each device.

You can sort it, upload it, integrate it with your system, whatever works for you. This is how you stay organised, stay compliant, and stay sane.

Plus, it gives you an audit trail. If there’s ever a question about a sale, you’ve got the documentation!

The Bottom Line: No Proof, No Trust

In today’s market, selling uncertified phones is risky business. You’re competing with marketplaces like BackMarket and competitors who show their work. If you don’t certify and provide official documentation, you’re the one taking the hit through lost buyers, disputes, or platform bans.

M360 gives you the tools to avoid that.
✔ Generate professional reports
✔ Stick on trusted labels
✔ Export data that keeps you in control

It’s what serious sellers use to stay ahead and what your buyers expect.

Don’t leave your sales to chance. Certify every device.

For more tips and knowledge, check out this post on Selling Used Phones!