iPhone 16 Used Buying Guide: 10 Things to Check First

Buying a second-hand iPhone can save you a fair bit of money, especially if you don't really care about having a sealed box and that fresh-out-of-the-shop feeling. A iPhone 16 Used model can be a smart option if you're after the same everyday features without paying the full price for a new device. A mobile trade can also be a handy option if you're selling your old phone and putting that money toward an iPhone 16. Still, used phones need a little checking before you hand over your cash. A few minutes of testing can save you from a very annoying problem later.

The iPhone 16 is still a capable phone. It has a good camera system, a bright display, USB-C charging, solid performance and plenty of life left for everyday use. But the condition of a second-hand device can vary quite a bit.

One phone may look almost untouched. Another may have a tired battery, scratched display and a charging port that only works if you hold the cable at just the right angle.

So, before buying a used iPhone 16, check these ten things.

1. Check the iPhone 16's Physical Condition

Start with the obvious stuff.

Hold the phone in your hand and look at the screen from different angles. Check the edges, back glass, camera area and buttons. Small marks are normal on a used phone. Deep scratches, dents or cracks are a different story.

Pay extra attention to:

• Cracks around the screen

• Chips on the back glass

• Dents along the frame

• Scratches over the camera lenses

• Loose buttons

• Gaps between the screen and frame

• Signs of previous repairs

Don't get too distracted by a few cosmetic marks. A tiny scratch on the frame isn't going to ruin your day.

A damaged camera lens, loose display or badly cracked back glass might.

2. Check the Battery Health

Battery health is one of the first things I would check on a used iPhone 16.

Go to:

Settings → Battery → Battery Health & Charging

Look at the maximum capacity percentage.

A higher percentage generally means the battery has retained more of its original capacity. A used phone with around 90% battery health will usually feel more reassuring than one sitting much lower, although battery condition isn't the only thing that matters.

Don't automatically reject a phone just because it isn't at 100%. It's a used phone, after all.

Also check whether iOS shows any battery service message. If the battery has been replaced, ask what battery was installed and whether the repair was carried out properly.

3. Check the IMEI Number

The IMEI is basically the phone's identification number. You'll want to check it before buying a second-hand iPhone.

You can find it under:

Settings → General → About

You can also see the IMEI on the device packaging if the seller still has the original box.

The number on the phone should match the number provided by the seller or shown on the box.

More importantly, check whether the phone has been reported lost, stolen or blocked by a carrier. A phone that looks perfectly fine can still cause headaches if its IMEI has a problem.

If you're buying online, ask the seller about the IMEI before paying. If they get strangely vague about it, I'd pause the purchase.

4. Make Sure Activation Lock Is Removed

This one matters a lot.

A used iPhone can look perfect and still be practically useless to the next owner if it's linked to someone else's Apple Account.

The seller should properly remove their account from the phone and turn off Find My iPhone before handing it over.

Ideally, don't just take someone's word for it. Have the seller erase the device while you're there and go through the setup process.

If the phone asks for the previous owner's Apple Account details during activation, stop.

Don't pay for it.

Apple's Activation Lock is designed to prevent someone else from using a lost or stolen iPhone, so you don't want to discover this problem after you've already left.

5. Test the Display and Touch Response

The iPhone 16's display should respond properly across the entire screen.

Open something like Notes and draw your finger across the display. Move slowly around the edges and corners.

You're looking for:

• Areas that don't respond

• Random touches

• Flickering

• Bright or dark spots

• Lines across the screen

• Unusual colour changes

• Cracks affecting touch

Try typing on the keyboard too. It's an easy way to notice a section of the touchscreen that isn't responding correctly.

A screen can look fine in a quick glance and still have a touch problem. Take an extra minute here.

6. Test All the Cameras

Don't just open the camera app, snap one photo and call it done.

Try the front and rear cameras. Switch between the available lenses and camera modes. Take a few photos in a well-lit place and check them closely.

Look for:

• Blurry images

• Strange spots or shadows

• Camera shaking

• Focus problems

• Cracked camera glass

• Slow camera switching

• Issues with video recording

Try recording a short video as well.

If the phone has had a rough life, the camera area is one place where damage can sometimes hide. A scratch on the body isn't a huge deal. A damaged camera lens is.

7. Test the USB-C Charging Port

The iPhone 16 uses USB-C, so the charging port deserves a quick test.

Plug in a compatible charging cable and make sure charging starts normally.

Don't wiggle the cable aggressively, but gently check whether the connection feels unusually loose.

You can also test data transfer if you have a laptop or suitable accessory available.

Check the port for:

• Dust or debris

• Bent or damaged contacts

• Loose connection

• Charging interruptions

A charging issue might be caused by something simple, such as compacted dust. Still, you don't want to assume that's the problem without checking.

8. Test the Speakers, Microphone and Buttons

This is where a few minutes of real-world testing helps.

Play music or a video and listen to the speakers. Does the sound crackle? Is one side noticeably quieter?

Then record a voice memo and play it back. This gives you a quick idea of whether the microphone is working properly.

Test the:

• Volume buttons

• Side button

• Action button

• Camera Control

• Speaker

• Microphone

Make a short phone call too, if possible.

A used iPhone isn't just a screen and camera. You're going to use those little bits every day, and an annoying button problem gets old surprisingly fast.

9. Check Storage and Network Compatibility

Before buying, check how much storage the phone has.

Go to:

Settings → General → iPhone Storage

The iPhone 16 was sold with different storage options, so don't assume the phone you're viewing has the capacity you want.

If you take lots of photos, download games or keep videos offline, storage can disappear faster than expected.

You should also check whether the phone is unlocked and compatible with your Australian mobile network.

If you're buying a used iPhone 16 from another country, don't assume everything will work exactly the same. Check the model number and network compatibility before making the purchase.

10. Ask About Repairs and Warranty

Finally, ask the seller some boring questions. They're boring until something goes wrong.

Has the screen been replaced?

Has the battery been replaced?

Has the phone been repaired after water or physical damage?

Are all parts genuine or compatible replacements?

Is there a remaining warranty?

If you're buying from a refurbished phone seller, check what warranty is included and what it actually covers. Don't stop at the word "warranty". Read the conditions.

A professionally inspected refurbished iPhone 16 may cost a little more than a random private-sale handset, but having some protection after purchase can be worth paying for.

Used iPhone 16 vs Refurbished iPhone 16

There is a difference between a phone simply being used and one being refurbished.

A privately sold used iPhone 16 may have had one previous owner and little or no formal inspection. You might get a fantastic phone for a good price. You might also get a phone with hidden issues. That's the gamble.

A refurbished iPhone has usually gone through some form of inspection, testing and preparation before being offered for sale. The exact process depends on the seller, so it's still worth asking what they actually checked.

Price matters, sure. But don't compare only the sticker price.

Compare the phone's condition, battery, storage, repair history and warranty too.

How Much Should You Pay for a Used iPhone 16?

There isn't one fixed used iPhone 16 price.

The amount can change based on storage, battery health, cosmetic condition, colour, repair history, seller reputation and whether a warranty is included.

A phone with a few scratches and no warranty shouldn't be priced like a near-mint device from a reputable refurbished seller.

Before buying, compare several listings rather than jumping at the cheapest one you find.

And if a deal looks almost suspiciously cheap? Give yourself a minute. There may be a reason.

Quick Checklist Before Buying an iPhone 16 Used

Before handing over your money, run through this quick list:

• Screen & Body Condition

• Battery Health

• IMEI Verification

• Carrier Block Status

• Activation Lock

• Touchscreen Response

• Front & Rear Cameras

• USB-C Charging Port

• Speakers & Microphone

• Buttons & Camera Control

• Storage Capacity

• Network Compatibility

• Repair History

• Warranty Terms

It sounds like a lot written down. In reality, most of these checks take only a few minutes.

Is an iPhone 16 Used Worth Buying?

Yes, it can be a sensible purchase if the phone is in good condition and the price makes sense.

The trick is not to get caught up in the excitement of finding a cheaper iPhone. Check the boring stuff first. Battery health, IMEI status, Activation Lock, cameras, charging and repair history matter much more than whether the box has a tiny dent.

If you're comparing several used iPhone 16 listings, make a little checklist on your phone and compare them side by side. It takes away some of the guesswork.

And honestly, that's probably the easiest way to avoid buyer's remorse: slow down, test the phone properly, and only pay when everything checks out.

Conclusion

Buying an iPhone 16 used can be a great way to save money, but a quick check matters. Look at the battery, IMEI, screen, cameras, charging port and warranty before paying. If you're also planning to sell your old phone, a mobile trade can help put some extra value toward your next iPhone.