How to Buy a Used iPhone in Australia: The Complete Checklist

Buying a brand-new iPhone straight from Apple is not cheap. Nobody needs to be told that. So it makes sense that hundreds of thousands of Australians look at the second-hand market every year - from Gumtree and Facebook Marketplace right through to specialist dealers like Trade.com.au.

The savings are real. A used iPhone 15 can cost several hundred dollars less than a new one. But the risk is also real - a device that looks perfect on the outside can carry hidden problems: a blocked IMEI, a dodgy logic board repair, an Activation Lock you can never remove, or a battery that dies by lunchtime.

We have been buying and selling second-hand phones in Australia for over five years. This guide covers everything we check before a phone leaves our hands - and everything you should check before a phone lands in yours.

Quick answer: what to check before buying a used iPhone in Australia

• Run the IMEI through a carrier checker to confirm it is not stolen or network-blocked
• Verify the device is not iCloud locked (Activation Lock)
• Check battery health - anything below 85% needs replacing soon
• Test both cameras, speakers, microphone and charging port
• Make a real test call with your SIM before handing over money
• Ask for the original receipt or proof of purchase

1. Check the IMEI - before anything else

The IMEI (International Mobile Equipment Identity) is a unique 15-digit number assigned to every phone. In Australia, it is the first thing to verify when buying second-hand, because carriers can blacklist an IMEI and render a device completely unusable on any local network.

There are two reasons a device ends up blacklisted:

• The previous owner defaulted on a phone plan with Telstra, Optus or Vodafone. Until the contract is paid out, the carrier can block the IMEI.
• The device was reported stolen. Some people take out insurance with Optus or Telstra, report the phone stolen, collect the payout, then sell the original - a fraudulent practice that leaves the buyer with a useless brick.

Scam alert: If a seller is reluctant to let you run an IMEI check or pushes back when you ask to see their ID, treat that as a serious red flag. A legitimate seller will have no issue with either.

To find the IMEI, dial *#06# on the device or check Settings → General → About. Then run it through a free checker:

• IMEI.info - free global IMEI database
• Your carrier's website - Telstra, Optus and Vodafone all offer IMEI checking tools
• ACCC Scam Alert - useful for understanding common phone-sale scams in Australia

If the IMEI comes back clean, you are safe to keep looking. If it flags as blocked or blacklisted, walk away.

2. Check for iCloud Activation Lock

Apple's Activation Lock ties an iPhone to the original owner's Apple ID. If a seller has not removed their account before selling, the next owner cannot use the phone as their own - and there is no way around it without the original login credentials.

Ask the seller to power on the device while you watch. If it boots straight to the home screen (or to the normal iOS setup screen), it is clear. If you see an Activation Lock screen asking for an Apple ID and password, the account has not been removed. Do not purchase that device unless the seller can enter the credentials and remove the account on the spot.

Good to know: When buying from Trade.com.au, every listing is verified as iCloud unlocked before it goes live. You will never receive a device with Activation Lock from us.

3. Check iPhone battery health

Battery health is one of the most transparent things you can check on an iPhone - Apple built the tool directly into iOS. Go to Settings → Battery → Battery Health & Charging and look at the Maximum Capacity percentage.

Here is what those numbers mean in practical terms:

If the battery is draining unusually fast, Apple Authorised Service Providers and reputable independent repair shops across Australia can replace it - usually for $80–$130 depending on the model.

4. Ask about the damage history

Screens crack. Phones get dropped. That is normal. What matters is how the damage was repaired and by whom.

A repair done by an Apple Authorised Service Provider uses genuine parts and maintains Face ID, True Tone and other sensor functions. A repair done by a cut-price shop with third-party parts can compromise those features permanently - and you may not discover it until weeks after purchase.

The basic standard for a used iPhone worth buying: 90–95% condition, no screen separation, no signs of water damage (check the SIM tray for a red indicator), and no evidence of unauthorised logic board work.

5. Run the 18-point inspection test

This is the same test our team runs on every single device before it goes to a customer. It takes under three minutes and covers every function that matters.

Charging port tip: Gently wiggle the lightning or USB-C cable while charging. A healthy port will charge steadily. If the charge reading jumps or drops, or needs the cable at a specific angle, the port may have internal damage - a repair that can cost $150 or more.

6. Make a real test call before you pay

This one gets skipped more often than it should. An iPhone can look perfect and pass every camera and software check - and still have an audio IC failure that prevents it from making or receiving calls properly. This is a logic board fault, and it is not cheap to fix.

Put your SIM in, dial a real number (call a friend, call a shop, call anyone), and confirm you can be heard clearly and hear them clearly. Bluetooth problems, intermittent audio drops and cellular connection failures are all issues sellers are known to hide behind a clean-looking exterior.

Used iPhone price guide - Australia 2025

Prices shift constantly, but here is a rough guide to what you should expect to pay for a well-checked, second-hand iPhone in Australia in 2025:

If a private seller's price is significantly below market rate - no box, no receipt, pressure to decide quickly - that is often a sign something is wrong. Genuine sellers with a clean device rarely need to give it away.

Gumtree vs. Facebook Marketplace vs. a licensed dealer

Each platform comes with its own risk profile:

• Gumtree and Facebook Marketplace can get you a good price but offer zero buyer protection. If the IMEI turns out to be blocked a week later, you have no recourse. Meet in a public place, take your time with the 18-point check, and never transfer money before the device is in your hand.
• eBay offers some buyer protection through its Money Back Guarantee, which adds a layer of security - though verifying condition before purchase is still up to you.
• Licensed dealers like Trade.com.au remove most of the risk. Every device is professionally tested, IMEI-verified, iCloud-cleared, and sold with a 12-month warranty. You pay a little more than Gumtree, but you buy with confidence.

Every iPhone we sell is tested against our 18-point checklist, IMEI verified and covered by a 12-month warranty.

Browse our iPhones

Your rights under Australian Consumer Law

When buying from a registered business in Australia, Australian Consumer Law (ACL) automatically applies. A seller cannot exclude your consumer guarantees - including the right to a repair, replacement or refund if the device has a major fault not disclosed at the time of sale.

Private sales (Gumtree, Facebook, individual sellers) carry far fewer protections. The ACL still covers basic misrepresentation - if a seller tells you a phone has never been repaired and it clearly has been - but pursuing a private individual is significantly harder than dealing with a licensed retailer.

Trade.com.au holds Secondhand Dealer Licence 4719222 and operates under Queensland fair trading regulations. Our warranty and returns policy goes beyond the legal minimum.

Red flags - walk away if you see these

• Seller refuses to let you run an IMEI check
• Device boots to an Activation Lock / Apple ID screen
• No original packaging, receipt or proof of purchase and the price is suspiciously low
• Seller cannot show you the device working - camera, calls, charging
• Price is 40% or more below the market average for no stated reason
• Seller insists on immediate payment via bank transfer
• Seller cannot provide a photo of their ID or refuses to meet in person

Frequently asked questions

How do I check if a used iPhone is stolen in Australia?

Dial *#06# to display the IMEI and run it through a free checker like IMEI.info or your carrier's blacklist checker. A blocked result means the device is reported stolen or on an unpaid plan and cannot be used on Australian networks.

What battery percentage should a used iPhone have?

Anything 85% or above is workable. At 90% or higher you will comfortably get through a full day. Apple recommends battery replacement once capacity drops below 80% - factor that cost into your offer price if you are buying below that threshold.

How do I check if an iPhone is iCloud locked before buying?

Power on the device and watch what happens. If it reaches the home screen or the standard iOS setup, it is unlocked. If you see an Activation Lock screen requesting an Apple ID, the previous owner's account is still attached - and there is no workaround if you cannot reach them.

Is it safe to buy a second-hand iPhone on Gumtree?

It can be safe if you take the right precautions: meet in a public place, run an IMEI check, test every function, and only hand over cash once you are satisfied. The risk is higher than buying from a dealer because there is no warranty or buyer protection.

Can Telstra, Optus or Vodafone block a second-hand iPhone?

Yes. If the previous owner defaulted on a device payment plan, the carrier can blacklist the IMEI. This prevents the phone from connecting to any Australian network. Always check IMEI status before paying, regardless of how legitimate the seller appears.