Buying used does not have to be a gamble. Whether you are buying a smartphone, laptop, tablet, gaming console, or camera, the same five checks protect you every time. This is the universal used device buying checklist: what to confirm before money changes hands, with links to the deep-dive guides for anything that needs more detail.
On Swappa, many of these checks are handled by staff before a listing ever goes live. If you are buying locally or on an unmoderated site, you will need to run them yourself.
Quick Answer
Before buying any used device, run five checks: verify the seller, confirm the device is clean (no locks, clean IMEI or serial, fully paid off), confirm condition and function, confirm what is included, and pay safely on-platform. On Swappa, listings are staff-reviewed before going live and payments run through PayPal buyer protection.
Use the table below as a quick scan, then work through each section.
| Step | What you are confirming | Deal-breaker if |
|---|---|---|
| 1. Verify the seller | Reputation, history, communication | New account, no ratings, off-platform push |
| 2. Verify it is clean | Locks, IMEI/serial, paid off | Blacklisted, account-locked, financed balance |
| 3. Verify condition and function | Device works, matches listed grade | Water damage, cracked glass, dead battery |
| 4. Verify what is included | Accessories, charger, cables | Missing essentials you are paying for |
| 5. Pay safely | Buyer protection intact | Off-platform or upfront payment requested |
1. Verify the Seller Before You Verify the Device
Start with the person selling the device. Seller reputation is your first signal and the fastest way to rule out bad actors before you spend any time evaluating the hardware.
- Check ratings, reviews, and completed transaction history where the platform provides them. Look for volume and recent positive feedback, not just one or two sales.
- Read the negative reviews. One dispute in fifty sales is different from a pattern of “not as described.”
- Be wary of brand-new, zero-feedback accounts selling premium devices at steep discounts.
- Read how the seller describes the device. Specific, honest descriptions (mentioning flaws, confirming what is included) are a strong trust signal.
- Treat any push to move communication or payment off-platform as a stop sign, full stop.
Buying locally?
If you are buying through Craigslist, Facebook Marketplace, or another local listing, the seller check extends to the meetup itself:
- Meet in a public place, ideally one with security cameras, such as a bank lobby, a police station parking lot, or a busy coffee shop.
- Bring a friend if you can.
- Never send money, a deposit, or a “hold” payment before you have the device in hand and it has passed every check below.
On Swappa, listings are staff-reviewed before going live and AI-powered fraud prevention flags suspicious activity. That vetting happens before the listing ever reaches you, which is why Swappa’s verified listings carry more weight than unmoderated classifieds. It does not replace reading the listing carefully, but it removes most of the guesswork on seller legitimacy.
How to Avoid Scams When Buying Used Electronics
2. Verify the Device Is Clean: Locks, IMEI, and Financing
A device has to be legally and technically clean before it is worth buying. This step catches stolen phones, financed devices with remote-lock risk, and hardware that will not activate on your carrier or account. A device you cannot activate is worth nothing, no matter how good it looks.
For phones and cellular devices
- IMEI/ESN check. Ask for the IMEI before agreeing to buy and confirm it is clean, meaning the device is not blacklisted by a carrier or reported stolen. A blacklisted phone may work on Wi-Fi but will not activate on a carrier network. You can run a check directly at swappa.com/imei. For a broader look at how blacklisted devices work, see How to Check If a Device Is Stolen or Blacklisted.
- IMEI matches the device. Confirm the IMEI you checked is the one on the physical phone. On an iPhone, go to Settings > General > About. On Android, dial *#06#.
- No carrier lock, unless that carrier works for you. Unlocked devices give you flexibility. Browse unlocked phones on Swappa to see verified unlocked listings.
- No Activation Lock or Find My (iPhone) / FRP (Android). The seller must fully sign out and reset the device before handoff or shipping. If these locks are active, you cannot set up the phone.
- iPhone: Settings > [Seller’s Name] > Find My should be off. If you cannot access Settings, ask the seller to show you directly.
- Android: The seller should sign out of their Google account completely. If the phone asks for the previous owner’s Google account after a factory reset, Factory Reset Protection (FRP) is still active.
- Fully paid off. A phone still on a carrier payment plan can be blacklisted or remotely locked if the seller stops paying.
For laptops, tablets, consoles, and cameras
- Verify the serial number matches the physical device, especially for Apple hardware where iCloud Activation Lock can affect MacBooks, iPads, and Apple Watches. The same Find My check above applies.
- Confirm no account lock is active.
- Chromebooks: confirm the device is not enrolled in enterprise or school management.
- Gaming consoles: confirm the console is not banned from online services such as PlayStation Network, Xbox network, or Nintendo Switch Online.
- Confirm the device is fully paid off. Financed devices can be remotely locked by the carrier or lender after purchase.
On Swappa, every listing must have a clean IMEI or ESN, no active OS or carrier lock, and a fully paid-off balance. Those requirements are enforced before a listing goes live, not just disclosed, so you do not need to run the IMEI check yourself.
3. Verify Condition and Function: What the Grade Should Mean
Cosmetic wear is normal on used devices and often means a better price for you. What matters is whether the device works and whether the listing’s condition grade is accurate.
Universal function checks
- Power and charging. The device powers on fully, and the battery charges and discharges. Swappa requires a fully functional battery to meet listing criteria.
- Screen and input. No dead pixels or touch-response failures. All physical buttons work.
- Connectivity and sensors. Wi-Fi, Bluetooth, cellular, cameras, ports, and any device-specific sensors (GPS, biometrics) function as expected.
- Condition grade match. Photos should show the actual device, and the stated grade (mint, good, fair) should match what is described. Discrepancies between photos and description are a red flag. If an angle you care about is missing, ask the seller for more photos.
Testing in person
If you can get the device in your hands before paying, run through this in a few minutes:
- Power it on from fully off.
- Tap and swipe across the entire screen. Dead zones or unresponsive areas point to screen damage.
- Press every button, and test Face ID, Touch ID, or the fingerprint sensor if the device has one.
- Check the speakers and microphone with a short call or voice memo.
- Open the front and rear cameras.
- Connect to Wi-Fi, check cellular signal, and pair a Bluetooth device.
- Look for cracks, dents, and debris or bent pins in the charging port.
- Check for water exposure. On iPhones with a SIM tray, the Liquid Contact Indicator is visible in the SIM slot: white or silver means no exposure, red or pink means the phone has been in contact with liquid. Many Android devices have a similar indicator.
For device-specific inspection steps, the individual device inspection guides go deeper.
Battery health
Used batteries degrade over time, so lower capacity than new is expected. On iPhones, check Settings > Battery > Battery Health & Charging for the current maximum capacity. On Android, most manufacturers include battery information in Settings or a diagnostic menu. If health is significantly degraded, factor the cost of a replacement into your offer.
Swappa sets no minimum battery percentage, but for iPhones, sellers must disclose if battery health is below 80% and the Apple battery message is showing in Settings. Full guidance on reading battery health across device types and what the thresholds mean in practice lives in Battery Health in Used Electronics: What to Know.
Condition grades, what each grade means in terms of cosmetic and functional expectations, and the full functional-testing framework are part of the Condition guide.
Hard deal-breakers across all categories: water damage and cracked glass. On Swappa, both fail listing criteria. A properly listed device should not have either.
4. Verify What Is Included
What ships with the device affects both value and day-one usability. “Like new” can still mean device only, so confirm the contents before you commit, ideally in writing.
- Phones and tablets: charging cable and adapter; stylus or keyboard if listed.
- Laptops: a power adapter of the correct wattage. Proprietary chargers can be expensive to replace, and cheap knockoffs can cause charging problems.
- Wireless earbuds: the charging case. Without it, earbuds are effectively unusable day to day.
- Consoles: controllers and any dock.
- Cameras: lenses and batteries as listed.
- Drones: batteries and the controller.
- Streaming devices: the original remote.
- Everything else: original box and documentation if they matter for your use or future resale, and anything visible in the listing photos that is not explicitly stated as included.
Missing accessories are not automatically a deal-breaker, but they should factor into your price. Replacement cables are cheap. A missing game controller, camera lens, drone battery, or proprietary laptop charger changes the math on what looks like a good deal. Browse used phones and accessories on Swappa to see what complete listings look like.
5. Pay Safely: Keep Everything On-Platform
The final step protects everything you have just verified. Keeping the transaction on-platform means your buyer protection stays intact through payment, delivery, and any dispute.
- Pay only through the marketplace’s protected payment method. Credit cards offer chargeback rights, but not a marketplace dispute process.
- Never pay via Zelle, Venmo, wire transfer, cryptocurrency, or gift cards. Those methods have no chargeback or dispute path if the seller disappears or the device is not as described.
- Buying locally? Pay only in person, after the device has passed every check above. Never pay in advance.
- Save receipts, messages, and photos of the device at the time of purchase.
- Know the return policy and your recourse before you need it.
On Swappa, payments run primarily through PayPal, which provides buyer and seller protections and dispute resolution. If a device is not as advertised, you are entitled to a refund and the seller must accept the return. Buyer’s remorse returns are at the seller’s discretion. Swappa’s flat 3% buyer fee (already in the listing price) is refunded when a proper PayPal refund is issued. Sellers pay payment processing (PayPal 3.49% + $0.49, or Stripe 2.9% + $0.30 for select sellers) and buyers pay applicable state sales tax at checkout. These fees are lower than typical auction-site rates, and they are what fund the staff review, fraud prevention, and 24/7/365 human support (typically around 20 minutes to a response) that back every listing.
For a full breakdown of why off-platform payment eliminates your recourse and how marketplace payment protection works in practice, see Why You Should Never Pay Outside a Marketplace.
Buying on a Verified Marketplace vs. Going It Alone
Running this checklist yourself takes time, and some checks, like IMEI verification or a physical inspection, require access to the device. Buying through a verified marketplace shifts most of that pre-screening off you.
On Swappa, every listing is reviewed by staff before it goes live. Requirements include:
- A clean IMEI/ESN
- No activation or OS locks
- No water damage and no cracked glass
- A fully functional battery
- A fully paid-off device
That is not a perfect guarantee, but it is a very different risk profile from a cash deal off a classified listing. Savings on used devices typically range from 30% to 60% off new prices, though this varies by category, listing, and where a model is in its release cycle. Browse current prices and live listings at swappa.com/buy.
Frequently Asked Questions
What should I check before buying any used device?
Five things: the seller’s reputation and transaction history, that the device is clean (no locks, clean IMEI or serial, fully paid off), that its condition and function match the listed grade, what accessories are included, and that you can pay safely on-platform with buyer protection intact.
What should I check before buying a used phone?
Run an IMEI check to confirm the phone is not blacklisted, confirm the IMEI matches the device, verify that Find My (iPhone) or Factory Reset Protection (Android) is fully disabled, inspect the screen and body for damage, test core functions, check battery health, and pay through a method with buyer protection.
What does a clean IMEI mean?
A clean IMEI means the phone has not been reported stolen, is not on a carrier blacklist, and is not flagged by the original carrier for an unpaid balance. A phone with a blacklisted IMEI may work on Wi-Fi but cannot activate on a carrier network. You can check at swappa.com/imei.
Do I need to check the IMEI on a tablet or laptop?
IMEI checks apply to phones and cellular-connected devices. For laptops, tablets, consoles, and cameras, verify the serial number, confirm no account lock (Activation Lock on Apple devices, FRP on Android) is active, and confirm the device is fully paid off with no financing balance.
How do I check if a used iPhone has Find My still active?
Ask the seller to open Settings > [Their Name] > Find My on the device. If Find My is on, the iPhone is still linked to their Apple Account, and the seller must sign out before the sale. If Find My is still active after you buy, the iPhone will ask for the previous owner’s Apple Account after a reset, making it unusable.
What is Factory Reset Protection (FRP) and why does it matter?
FRP is Google’s anti-theft feature for Android devices. After a factory reset, the device requires the Google account that was signed in before the reset. If the seller does not sign out of their Google account before handing over the device, you will be locked out after any reset.
How do I know if the listed condition grade is accurate?
Compare the listing photos and stated grade to the written description. Then confirm core functions: power, charging, screen, input, and connectivity. Red flags include photos that do not show the full device, vague condition language, and no disclosure of any wear.
What counts as a deal-breaker on a used device?
Water damage, cracked glass, a non-functional battery, a blacklisted IMEI, an active Activation Lock or FRP, and any unpaid financing balance. On Swappa, these all fail listing criteria. A properly listed Swappa device should be clear of every one of them before you ever see the listing.
Is it safe to buy used electronics online?
Yes, with the right checks. The main risks (stolen devices, hidden damage, no recourse on payment) are all manageable. A verified marketplace with staff-reviewed listings and PayPal buyer protection reduces those risks significantly compared to cash-only local sales or unmoderated classifieds.
Is paying on-platform really necessary if an off-platform price looks better?
Yes. Off-platform payment removes buyer protection and chargeback rights entirely, which is exactly the situation scammers are creating when they push you off-platform. The platform fee is what funds verification, fraud prevention, and dispute resolution. Without it, you have no recourse if the device is misrepresented or never ships.
The Bottom Line
One checklist covers every used device: verify the seller, confirm it is clean, check condition and function, confirm what is included, and pay safely. Skipping steps is how buyers end up with blacklisted phones, activation-locked tablets, or devices that look nothing like the listing photos. Run all five and you can buy used with confidence regardless of category.
Swappa verified listings reduce risk at every step: staff review, clean-device requirements, and PayPal buyer protection are built into every transaction.
