Buying a Used iPhone: 15 Things to Check First

A used iPhone can be a brilliant bargain or an expensive headache, and the difference comes down to a few minutes of checking before you hand over any money. Drawing on common buying scenarios and user needs, I have boiled it down to fifteen checks that catch almost every problem. Run through this list before you pay, and you will buy with confidence instead of crossing your fingers.

Before You Even Meet the Seller

The smartest checks start before you see the phone. Ask the seller for the model, storage size, and battery health figure, and ask for clear photos of the actual device, not stock images. A seller who answers readily and shares real photos is far more likely to be trustworthy. Vague answers, pressure to pay quickly, or refusal to share details are red flags worth walking away from. A genuine seller has nothing to hide and will happily confirm the basics up front.

The 15 Things to Check

Go through every one of these with the phone in your hands before paying.

• 1. Battery Health. In Settings, Battery, check Maximum Capacity. Above eighty percent is healthy. Lower means you may need a replacement.
• 2. Activation Lock. Make sure the phone is signed out of the previous owner's Apple account, or it will be useless to you. This is the single most important check.
• 3. Carrier lock. Confirm the phone is unlocked, or locked to a carrier you can use. A locked phone may not work with your network.
• 4. The screen. Look for cracks, dead pixels, discoloration, and touch dead zones. Run a white and a black image full screen to spot flaws.

• 5. Front and rear cameras. Open the camera, switch between lenses, and take test shots. Check for blur, spots, or a camera that will not focus.
• 6. All the buttons. Test the power button, volume buttons, and the silent switch. A faulty button is a common and annoying fault.
• 7. Face ID or Touch ID. Set it up and confirm it works reliably. A broken sensor is costly to fix.
• 8. Speakers and microphone. Play audio and make a test call or voice memo to check both speakers and the mic are clear.

• 9. Charging and the port. Plug it in and confirm it charges. Check the port for dirt, damage, or a loose connection.
• 10. Wi-Fi and Bluetooth. Connect to a network and pair a device to confirm both radios work.
• 11. Water damage signs. Look for corrosion or discoloration around the port and check for any warping. Ask if it has ever been wet.
• 12. The IMEI. Check the IMEI number is clean and not reported lost or stolen, using a free online checker before you pay.

• 13. The true model and storage. In Settings, General, About, confirm the model and storage match what was advertised.
• 14. Signs of repair. A non-genuine screen or battery can trigger warnings in settings. Check for any repair messages that suggest unofficial parts.
• 15. Overall condition. Inspect the frame and back for dents and deep scratches, which hint at how the phone was treated.

The Two Checks That Matter Most

If you only have time for two of these, make them Activation Lock and Battery Health. A phone still locked to someone else's Apple account is a paperweight you cannot use, no matter how good it looks, and it is the most common way people lose money on a used iPhone. Battery Health, meanwhile, is the difference between a phone that lasts all day and one you are constantly charging. Confirm both before anything else, and you have avoided the two biggest pitfalls entirely.

A Fair Price Is Part of a Safe Buy

Knowing the going rate protects you as much as any technical check. Look up what the same model and storage in similar condition sells for, and be wary of a deal that seems too good, because it usually is. A price far below market often signals a stolen, locked, or faulty phone. Paying a fair price from a reputable source, ideally with some form of return option, is the cheapest insurance you can buy. For help choosing the right model in the first place, see our iPhone buying guide.

Where to Buy and How to Pay

Buy from sellers who offer some protection: reputable refurbishers, established marketplaces with buyer protection, or in-person sales where you can inspect first. Avoid paying by methods that offer no recourse if something goes wrong. If you are meeting in person, do it somewhere safe and public, and never pay before you have run your checks. A trustworthy seller will give you the time to do exactly that, and one who rushes you is one to avoid. If you are torn between iPhone and Android entirely, our iPhone vs Android guide can settle that first.

After You Buy: Your First Steps

Once the checks pass and the phone is yours, a few first steps protect your purchase. Reset the iPhone to factory settings if the seller has not already, then set it up fresh with your own Apple account so nothing of theirs lingers. Update to the latest software immediately for security and bug fixes, and turn on Find My and a strong passcode to protect the device. Finally, do a quick charge cycle and watch how the battery behaves over the first day, since real-world use is the truest test of battery health. Taking ten minutes to set the phone up properly from the start means you begin ownership with a clean, secure, fully updated device, and it quietly confirms one last time that everything you checked at purchase is genuinely working as it should.