Buying a phone can be exciting, but it can also be confusing when you are not sure whether the device is new, used, or refurbished. A phone may look almost perfect on the outside while having been previously activated, repaired, returned, or used by another person.
The good news is that you do not need to be a phone expert to check its condition. By looking at the phone’s IMEI number, serial number, battery condition, activation status, warranty information, physical condition, and software history, you can get a much clearer idea of what you are buying.
This guide explains how to check if a phone is new, used, or refurbished before you pay for it.
What Is the Difference Between a New, Used and Refurbished Phone?
Before checking a phone, it helps to understand what these terms mean.
A new phone is normally a device that has not previously been sold and used by a customer. It should generally be unused, complete with its original packaging and accessories, and covered by the manufacturer’s applicable warranty.
A used phone is a device that has previously been owned or used. It may have scratches, battery wear, signs of repair, or other evidence of previous use. However, a used phone can also be in excellent condition.
A refurbished phone is a previously owned, returned, or otherwise pre-owned device that has been inspected, tested, repaired or restored before being sold again. The exact refurbishment process depends on the seller. Some refurbished phones may have replacement batteries, screens, or other components.
Importantly, refurbished does not automatically mean bad, and new does not automatically mean that everything about the phone is perfect. The seller, warranty, condition, and authenticity all matter.
1. Check the IMEI Number
One of the first things you should do when checking a phone is find its IMEI number.
IMEI stands for International Mobile Equipment Identity. It is a unique identifier used for mobile devices. Depending on the phone, you may have more than one IMEI because of dual-SIM or eSIM support.
You can usually find the IMEI by opening the phone’s settings and going to the device information or “About phone” section. On many phones, dialing *#06# can also display the IMEI.
For example, Samsung says the IMEI and serial number can be found through the phone’s settings, the original packaging, Samsung Members, and, on supported devices, by dialing *#06#.
Google also provides several ways to find the IMEI on Pixel phones, including through Settings, the phone’s box, or the SIM tray.
Once you find the IMEI, compare it with the number printed on the original box, if the box is available.
Why should you check the IMEI?
The IMEI can help you confirm that the phone’s identity matches the information provided by the seller. It can also be useful when checking warranty information or contacting a manufacturer or network provider.
If the IMEI displayed by the phone does not match the IMEI on the box or documentation, stop and investigate before buying.
An IMEI mismatch does not automatically prove that a phone is stolen or fake, because there can be legitimate explanations in some situations. However, it is a serious warning sign that deserves clarification.
2. Check the Serial Number
The serial number is another important identifier.
Unlike the IMEI, which identifies a mobile device for cellular-network purposes, a serial number is assigned by the manufacturer to identify a particular product.
Go to your phone’s settings and look for About Phone, Device Information, or a similar option. Compare the serial number shown on the phone with the information on the original packaging or purchase documentation.
Samsung explains that its phones can display the serial number in the About Phone section, while Google provides similar information through its device settings and account pages.
A mismatch should not be ignored.
If a seller tells you that a phone is brand new but the identification details do not match the box, ask for an explanation before completing the purchase.
3. Check the Warranty Status
Checking the manufacturer’s warranty is one of the most useful ways to determine whether a phone has a history of ownership or activation.
A warranty check may show information such as whether the device is covered, when coverage expires, or whether the device is eligible for particular support services.
For example, Google says that Pixel warranty information can be checked using the phone’s IMEI, while Samsung provides warranty and coverage information for supported Galaxy devices.
If you are buying a phone advertised as brand new, but the warranty appears to have started long ago, ask the seller why.
There are legitimate reasons for this. A phone could have been activated by a retailer, used as a demonstration unit, or sold in a way that affects the warranty start date. Therefore, a warranty date by itself is not absolute proof that a phone is used.
Instead, consider it one piece of evidence alongside the other checks in this guide.
4. Look at the Battery Condition
The battery is one of the best physical clues that a phone has been used.
Smartphone batteries naturally experience wear as they are charged and discharged over time. A phone that has been heavily used may therefore have noticeably reduced battery capacity.
On iPhones, for example, you can check battery information through the Battery settings. Other manufacturers may provide battery health information through their settings, diagnostic tools, or support applications.
If a seller says a phone is brand new, but its battery condition suggests significant previous use, ask questions.
However, battery health should not be used alone to determine whether a phone is refurbished. A refurbished phone may have received a replacement battery and could therefore have excellent battery performance.
Similarly, a new phone that has been sitting in storage for a long time may not behave exactly like a recently manufactured device.
5. Inspect the Phone for Signs of Use
Physical inspection can reveal clues that software checks cannot.
Look carefully at:
- The screen
- Camera lenses
- Charging port
- Buttons
- SIM tray
- Phone frame
- Back panel
- Speaker openings
- Screw areas, where visible
- Protective film and packaging
- Included accessories
Look for scratches, dents, fingerprints, worn buttons, dust around ports, small marks around the charging connector, or damage around the edges.
A phone with obvious signs of use should not normally be described simply as “new.”
That does not necessarily mean you should reject it. If it is being sold as a used or refurbished phone at an appropriate price, the condition may be perfectly acceptable.
The important point is that the physical condition should match the seller’s description.
6. Check Whether the Phone Has Been Activated
Activation status can provide another important clue.
A phone that has never been activated may go through an initial setup process when you first turn it on. However, activation behavior differs between manufacturers and models, so do not rely on one screen as absolute proof of a phone’s history.
For an iPhone, Apple specifically advises buyers to make sure a used device has been erased and is no longer linked to the previous owner’s account. If an iPhone displays an “iPhone Locked to Owner” message or requests the previous owner’s Apple Account information during setup, you should not take ownership until the previous owner has removed the device from their account.
This is especially important when buying a second-hand iPhone.
A phone that reaches the normal setup process is in a much better position for a new owner, but you should still perform the other checks in this article.
7. Check for Activation Lock and Account Locks
Account locks are different from simply checking whether a phone has been used.
A phone may be perfectly genuine but still be unusable by a new owner because it remains connected to someone else’s account.
For iPhones, Activation Lock is particularly important. Apple recommends checking that a used iPhone has been erased and removed from the previous owner’s account before buying it.
If you are buying an Android phone, make sure the previous owner’s accounts have been properly removed and that you can complete the setup process using your own account.
Never accept a seller’s claim that “you can remove the lock later” without verifying the device yourself.
8. Check the Phone’s Model Number
The model number can tell you whether the device matches the product the seller claims to be offering.
Go to Settings > About Phone or the equivalent menu on your device.
Check:
- Model name
- Model number
- Storage capacity
- RAM, where displayed
- SIM configuration
- Region or carrier information, where available
Compare these details with the seller’s advertisement.
For example, if you paid for a 256GB phone but the device identifies itself as a 128GB model, there is an obvious problem.
A model number can also help you identify the exact variant of a phone because manufacturers sometimes release different versions for different countries, carriers, or markets.
9. Look for Evidence of Repairs
A refurbished phone may contain replacement components.
That is not necessarily a problem. In fact, replacing a damaged component can be part of a proper refurbishment process.
The important question is whether the seller has accurately described the device.
Depending on the manufacturer and model, the phone may provide information about certain replaced or non-genuine components. Some phones may also show repair or parts information in their settings.
You should also look for physical signs of repair, such as:
- Uneven gaps around the screen
- A back panel that does not sit correctly
- Loose buttons
- Scratches around the frame
- Display problems
- Camera issues
- A charging port that feels damaged
- Adhesive or sealing problems
- Unexpected error messages
Do not open the phone yourself simply to check whether it has been repaired. Doing so can damage the device and may affect warranty or water-resistance protection.
10. Test the Important Phone Features
Whether a phone is new, used, or refurbished, you should test it before paying whenever possible.
Make a checklist and test:
Screen
Open different apps and look for dead pixels, unusual lines, flickering, discoloration, or areas where touch does not respond.
Touchscreen
Move your finger across the entire screen. Make sure taps and swipes work from edge to edge.
Cameras
Test the front and rear cameras. Take photographs and record short videos. Check whether the images are clear and whether autofocus works correctly.
Speakers and microphone
Play audio and make a test call. Check whether the speaker sounds normal and whether the other person can hear you.
Charging
Connect a compatible charger and make sure the phone recognizes it.
Buttons
Test the power, volume, mute, and other physical buttons.
Mobile network
Insert your SIM card or test the appropriate cellular connection. Check whether the phone can make calls, send messages, and access mobile data.
Wi-Fi and Bluetooth
Connect to Wi-Fi and pair a Bluetooth accessory if possible.
Biometrics
Test fingerprint recognition or Face ID/face unlock if the device supports it.
A refurbished phone that passes these tests can be a better purchase than a supposedly new phone that has hidden faults.
11. Check the Original Box and Accessories
Packaging can provide useful clues, but it should not be treated as conclusive proof.
Check whether the box matches the phone’s:
- Model
- Color
- Storage capacity
- IMEI
- Serial number
Also inspect the charger, cable, manuals, seals, and other accessories.
Be careful, however: packaging can be replaced or recreated. A phone being inside a clean-looking box does not prove that it is new.
Think of the box as supporting evidence rather than the final answer.
12. Ask the Seller Direct Questions
If you are buying from an individual or independent retailer, ask straightforward questions.
You can ask:
“Has this phone ever been activated?”
“Has it been repaired?”
“Is it refurbished?”
“Has the battery been replaced?”
“Is the phone still under warranty?”
“Does the IMEI match the box?”
“Is the phone unlocked for my network?”
“Can I test it before paying?”
A trustworthy seller should be comfortable providing reasonable information about the phone.
Be cautious if the seller refuses to let you inspect the device, avoids questions about its history, or pressures you to pay immediately.
13. Be Careful With Online IMEI Checkers
You may find websites that claim to identify a phone’s history using its IMEI.
Some services can provide useful information, but you should be careful about treating third-party IMEI reports as definitive.
The most reliable information should come from the manufacturer, your network provider, the seller’s documentation, or reputable service providers.
Also avoid entering sensitive personal information into unknown websites simply because they promise a “free phone history report.”
An IMEI number is useful for identifying a device, but you should not assume that every website claiming to check an IMEI has access to complete or accurate ownership and repair records.
14. Understand That “Refurbished” Can Mean Different Things
Not all refurbished phones are refurbished to the same standard.
One seller may professionally inspect, clean, test, and repair a phone using appropriate replacement parts. Another seller may simply wipe the phone, clean the exterior, and resell it.
This is why you should ask who refurbished the phone and what was done to it.
A reputable refurbished phone should ideally come with a clear condition grade, return policy, warranty information, and details about the testing or refurbishment process.
A manufacturer’s refurbished device may also be subject to different standards from a phone refurbished by an independent seller.
Therefore, do not judge a refurbished phone only by the word “refurbished.” Judge it by the seller, warranty, condition, testing process, and price.
15. Compare the Price With the Phone’s Condition
Price can be another useful warning sign.
If a seller is offering a supposedly brand-new phone for far less than comparable new devices, ask why.
There may be a legitimate explanation. It could be a clearance item, older model, promotional sale, imported model, or retailer discount.
But an unusually low price can also indicate that the phone is used, refurbished, locked, damaged, or otherwise different from what you expect.
Do not let a cheap price prevent you from performing basic checks.
A few minutes of inspection can save you from spending money on a device that does not match the advertisement.
New, Used or Refurbished: Quick Comparison
| Check | New Phone | Used Phone | Refurbished Phone |
|---|---|---|---|
| Previous owner | Usually no | Yes | Usually yes |
| Physical wear | Normally minimal or none | May be visible | Depends on grade |
| Battery | Normally little or no wear | May show wear | May be replaced |
| Repairs | Normally none | Possible | Often inspected or repaired |
| Packaging | Usually original | May be missing/replaced | Varies |
| Warranty | Manufacturer/seller terms | Varies | Often seller or manufacturer terms |
| Activation history | Usually little/no customer use | Usually activated | May have previous activation |
| Price | Usually highest | Usually lower | Usually lower than new |
A Simple Checklist Before Buying a Phone
If you want a quick way to check whether a phone is new, used, or refurbished, follow these steps:
- Check the IMEI.
- Compare the IMEI with the box or documentation.
- Check the serial number.
- Confirm the exact model and storage capacity.
- Check the warranty status.
- Inspect the screen and body for signs of use.
- Check the battery condition.
- Look for signs of repair or replaced parts.
- Make sure previous accounts and activation locks are removed.
- Test the camera, speakers, microphone, buttons, charging, Wi-Fi, Bluetooth, and mobile network.
- Ask the seller whether the phone has been refurbished or repaired.
- Check the seller’s return policy and warranty.
- Compare the price with similar phones from reputable sellers.
Can You Tell If a Phone Is New Just by Looking at It?
Not always.
A refurbished or lightly used phone can look almost identical to a new phone, especially if it has been professionally cleaned and repaired.
Likewise, a phone with new-looking packaging may not necessarily be brand new.
That is why the best approach is to combine several checks instead of relying on one clue.
The IMEI, serial number, warranty information, battery condition, activation status, physical condition, repair information, and seller documentation can collectively give you a much more reliable picture of the phone’s history.
What If the Phone Passes All the Checks?
If the phone passes your checks, the next step is to make sure the purchase itself is protected.
Keep your receipt, invoice, warranty information, and any messages or advertisements describing the phone’s condition.
If possible, buy from a seller that clearly states whether the device is new, used, open-box, or refurbished and provides a reasonable return period.
For warranty claims, manufacturers may require the IMEI or serial number and proof of purchase. Google, for example, notes that an IMEI or serial number may be needed when checking warranty coverage or making a warranty claim.
Final Thoughts
Knowing how to check if a phone is new, used or refurbished can help you avoid unpleasant surprises and make a more confident buying decision.
The most important thing is not to rely on appearance alone. Check the phone’s IMEI and serial number, verify the model, look at warranty information, inspect the battery and physical condition, check for activation or account locks, and test the major features.
If the phone is advertised as new but shows clear evidence of previous use, ask questions before paying. If it is advertised as refurbished, find out who refurbished it, what was replaced, what tests were performed, and what warranty or return protection is included.
A used or refurbished phone can be an excellent way to save money. The key is knowing exactly what you are buying.
When in doubt, slow down, verify the phone’s details, and choose a seller that is transparent about the device’s condition.