Buying Guides

A used iPhone is one of the smartest buys in tech — if you check it properly. The same phone that sells for $799 new can be yours for under $400 a year or two later, and it will do 95% of what the new one does. But the used market is also where every scam in the phone business lives: stolen phones, carrier-locked phones sold as unlocked, phones still tied to someone else's Apple ID, and "mint condition" phones with a battery on its last legs.

I buy and sell phones for a living, and I check every single one the same way — whether it costs $150 or $1,000. This is that checklist: ten checks, in order, that take about fifteen minutes and separate a genuine bargain from an expensive mistake.

Last updated: October 17, 2026. Used prices are Swappa average sale prices and refurbished-marketplace starting prices checked in October 2026 — prices move week to week, so treat them as a guide, not a quote.

What used iPhones actually cost in October 2026

Before you judge any deal, know the going rate. A price far below these ranges is not a bargain — it is the first warning sign. These are what buyers actually paid on Swappa (average sale prices) and the cheapest refurbished starting prices on US marketplaces.

Two things jump out. First, private-sale prices and refurbished prices are close — you pay a small premium for a refurbished phone, and in return you get a warranty and a return window. Second, Apple's trade-in values sit well below private-sale prices, which is why selling privately usually wins — our trade-in vs sell guide does the full math. One more note: if you are buying abroad, the same phone can cost far more in other markets once taxes and import duties pile on, and warranty terms and SIM setup may differ — see our eSIM-only guide before buying an import.

The 10-step checklist

Do these in order. Any failure is a reason to walk away — there are plenty of clean iPhones for sale.

1. Get the IMEI — and run the checks before you meet

Ask the seller for the IMEI before you travel anywhere. A serious seller will send it; a scammer will make excuses. Run it through a full IMEI report first (our IMEI check guide explains exactly what the 15-digit number reveals). If the seller refuses to share the IMEI, stop here. That is the single biggest red flag in used-phone buying — the IMEI identifies the phone, not the owner, so "privacy" is not a real reason to withhold it.

2. Match the IMEI in three places

When you have the phone in hand, the IMEI in Settings → General → About must match the one on the box label and the one engraved on the SIM tray (on models that have one). A mismatch means a swapped box, a swapped tray, or a counterfeit — all three mean no deal. Also check that the IMEI you checked remotely is the one in the phone in front of you, not a different handset.

3. Run the free blacklist check

Enter the IMEI at the CTIA's Stolen Phone Checker (stolenphonechecker.org). It is free, backed by the GSMA's global blocklist, and limited to five queries per day for US consumers. A flagged result ends the deal immediately: a blacklisted iPhone can be blocked from every network, and it will look perfectly fine until you put a SIM in it. Remember the check is a snapshot — a seller can report the phone stolen after the sale, which is why step 10 matters.

4. Confirm the carrier lock on the device

On the phone: Settings → General → About → Carrier Lock. "No SIM restrictions" means unlocked. Cross-check it against the IMEI report — if the two disagree, trust neither and dig deeper. A locked phone is not necessarily a scam, but it is worth less: it only works on one carrier until it is unlocked, and resale value drops accordingly. Our 4 ways to check if an iPhone is unlocked guide covers the SIM-swap test too, and the factory unlocked vs carrier locked explainer covers what each status means for resale.

5. Confirm Activation Lock is OFF — with the phone erased in front of you

This is the check most buyers skip, and the one that bricks the most phones. Ask the seller to sign out of their Apple ID and erase the phone in front of you (Settings → General → Transfer or Reset iPhone → Erase All Content and Settings), then take you to the Hello setup screen. If setup asks for the previous owner's Apple ID, the phone is still tied to them and unusable to anyone else. A clean blacklist result does not mean the phone is usable — Activation Lock and carrier lock are two different locks, and you must clear both.

6. Check battery health — 80% is the line

Settings → Battery → Battery Health. Apple's rule: below 80% maximum capacity means the battery is due for replacement, and AppleCare+ covers a free replacement at that point. Budget the repair into your offer:

A phone at 79% is not a bad phone — but it is a $99–$119 cheaper phone. If the seller's price assumes a healthy battery, renegotiate or walk away. And if Battery Health shows "Service" or the reading looks odd, treat it as a replaced-battery warning and check step 7.

7. Check Parts and Service History

Settings → General → About → Parts and Service History (on iPhone 12 and later running iOS 15.2+). Apple lists replaced parts here — display, battery, cameras — and whether each is a genuine Apple part. "Unknown Part" means the replacement was not a genuine Apple part or was not verified by Apple. A replaced screen is not automatically a deal-breaker, but it should be reflected in the price, and a phone with multiple unknown parts has usually lived a hard life.

8. Run the 5-minute hardware test

Do not take the seller's word for anything you can test in five minutes:

• Face ID: set it up fresh. If it fails or says "Face ID is not available," the TrueDepth camera is damaged — an expensive repair.
• Cameras: shoot a photo and a short video on every lens (front, wide, ultrawide, telephoto). Look for black spots, blur, or a camera that will not focus.
• Microphone and speakers: record a voice memo and play it back, then play a video at full volume. Crackling or silence means speaker or mic damage.
• Buttons and ports: press every button, flip the Action button / mute switch, and plug in a charger. A loose charging port is a common wear item.
• Screen: open a plain white image at full brightness and look for dead pixels, burn-in, or a yellow tint at the edges. Drag an app icon slowly around the whole screen — if it jumps or drops, the touch layer has dead zones.

9. Check warranty with the serial number

Take the serial from Settings → General → About and enter it at checkcoverage.apple.com. Apple's free tool confirms the exact model, the estimated purchase date, and whether the Limited Warranty or AppleCare is still active. Remaining AppleCare is real money — a phone with six months of coverage left is worth more than an identical one with expired coverage. It also catches the listing that claims "iPhone 15 Pro" when Apple says iPhone 15.

10. Get a receipt with the IMEI on it — and pay with a trail

Before money changes hands, get a written receipt that includes the IMEI, the price, the date, and the seller's name. Pay in a way that leaves a trail (bank transfer, card, or a marketplace with buyer protection) — never cash with no record. If the phone gets blacklisted later, that receipt is your evidence for a claim, a police report, or a small-claims filing. Buying on a marketplace? Stick to its payment system. The moment a seller asks to move off-platform "to save fees," your buyer protection evaporates.

Refurbished vs used vs "seller refurbished"

These three labels are not the same thing, and the price gap between them is the warranty:

Rule of thumb: if you cannot inspect the phone yourself, buy certified refurbished — the warranty is worth the small premium. If you can inspect it in person and run this checklist, a private sale saves you money. And beware the word "refurbished" on a private listing with no warranty behind it — that is just a used phone with better marketing.

Where to buy: the honest trade-offs

• Swappa: private sellers, IMEI checks required on listings, PayPal protection. Best prices for buyers who run the checklist. Swappa charges sellers ~3% — which keeps prices honest.
• eBay: biggest selection, buyer protection, but fees run ~13.6% and listing quality varies. Stick to sellers with long histories and real photos.
• Back Market / certified refurbishers: graded condition (Fair / Good / Excellent), 1-year warranty, 30-day returns. Pay a little more, sleep better.
• Apple Refurbished: the gold standard — genuine parts, new battery and outer shell, 1-year Apple warranty. Rarely the cheapest, always the safest.
• Local marketplace / in person: best for running the full checklist on the spot, worst for recourse if something goes wrong. Meet in a public place, bring a friend, and never pay before the checks are done.

6 red flags that mean walk away

1. The seller won't share the IMEI. The single biggest red flag. A legitimate seller has nothing to lose by letting you check.
2. The price is far below market. A "new" iPhone 17 Pro at half the going rate is either stolen, locked, or fake. Check the table above before you believe a miracle deal.
3. IMEI mismatch between box, tray, and Settings. Any mismatch, any excuse, no deal.
4. "Clean IMEI" but Find My is still ON. A clean blacklist result does not mean the phone is usable. If the seller cannot sign out of their Apple ID and erase the phone in front of you, it is still their phone.
5. No box, no receipt, no history. One missing item is normal. All three missing, plus a too-good price, is a pattern.
6. Pressure to pay fast, in cash, somewhere odd. "Someone else is coming at 6" is a sales tactic. A clean phone will still be clean tomorrow — and if it is not, you just dodged a problem.

What to do if you already bought a bad one

First, don't try to "fix" it with a shady unlock service. If you bought from a store or marketplace with buyer protection, file a claim immediately with the IMEI, your receipt, and the blacklist result — eBay, Swappa, and Back Market all cover "not as described" and blacklisted devices. If you bought privately, contact the seller in writing and ask for a refund; your receipt with the IMEI on it is your evidence for a police report or small-claims filing. And if it is Activation Lock rather than blacklist, only the previous owner can remove it — Apple will not remove it for you without proof of purchase showing you as the buyer. Full detail in our IMEI check guide.

FAQ

How much should I pay for a used iPhone?

Use the Swappa averages above as your anchor: roughly $387 for an iPhone 15, $530–$685 for an iPhone 16, $652–$845 for an iPhone 16 Pro, and $734–$887 for an iPhone 17 (base storage, October 2026). Adjust down for low battery health, unknown parts, or a locked carrier — and walk away from anything far below those ranges.

Is it safe to buy a used iPhone online?

Yes, if you buy through a marketplace with buyer protection and run the IMEI, blacklist, and lock checks before paying. Never move off-platform to pay, and never buy from a seller who will not share the IMEI.

What battery health is acceptable on a used iPhone?

85% or above is good. 80–84% is fine but factor in a battery replacement soon. Below 80%, Apple considers the battery due for service — negotiate $99–$119 off the price, or pick a phone with a healthier battery.

Should I buy refurbished or used?

If you cannot inspect the phone yourself, buy certified refurbished — the 1-year warranty is worth the premium. If you can inspect it in person and run this checklist, a private sale saves you money.

Can a clean IMEI turn bad after I buy the phone?

Yes. If the seller reports the phone stolen after the sale — or stops paying the installments on it — the carrier can blacklist it later. That is why you buy in person, get a receipt with the IMEI written on it, and pay in a way that leaves a trail.

Bottom line: buying used is smart. Buying blind is not. Fifteen minutes, ten checks, one receipt with the IMEI on it — and you get flagship quality for half the price, with none of the horror stories. Run the imei.ae check first, then check the battery, the locks, and the seller with the same care.