How to Check if a Phone Is Original: IMEI, Serial Number and Fake Warning Signs
Counterfeit and cloned phones exist in every market, and some are good enough to fool you for a few minutes in a shop. The good news is that a handful of simple checks catches most of them. This guide explains what to look at before you pay, and what to do afterwards if something seems wrong.
Why the price is your first clue
If a brand-new flagship phone is offered at a price far below what reputable sellers charge, ask why. Genuine phones have a real cost, and sellers who pay that cost cannot sell at a large loss. A very low price can mean a clone, a stolen or blacklisted device, a locked or refurbished phone described as new, or a phone with no valid warranty. That does not make every cheap offer a fake, but it is a reason to check more carefully.
Check 1: The IMEI number
Every genuine phone has a unique IMEI (International Mobile Equipment Identity). To see it, open the dialler and type *#06#. Then confirm:
- The IMEI shown on screen matches the number printed on the box.
- It also matches the IMEI in Settings → About phone (or Settings → General → About on an iPhone) and on the phone’s label or SIM tray.
- Dual-SIM phones show two IMEIs; both should be listed on the box.
If the numbers do not match, or the dialler shows nothing at all, do not buy the phone. Cloned devices often display a fake or duplicated IMEI.
Check 2: The serial number and warranty status
Manufacturers can tell you whether a serial number belongs to a real device. For an iPhone, open Settings → General → About to find the serial number, then enter it on Apple’s official coverage-check page (checkcoverage.apple.com) to see the model and warranty status. For other brands, use the manufacturer’s official support website or app to check the serial number or IMEI. If a phone sold as new already shows an activation date long ago, or a warranty that has nearly expired, it is not the new phone you were promised.
Check 3: The software and the settings screen
Open Settings → About phone and read the model name, operating-system version, storage and memory. Compare them with the manufacturer’s official specification for that exact model. Warning signs include:
- An Android phone made to look like an iPhone, with an iOS-style interface but an Android settings menu underneath.
- A model name or version number that does not exist on the brand’s website.
- Storage or memory that is lower than advertised once you look at the real figures.
- A cluster of unknown pre-installed apps, or an app store you do not recognise.
Check 4: Fake storage
Some counterfeit phones and memory cards report far more storage than they really have. The screen may say 512GB while the hardware holds only a fraction of that, and files start to corrupt once the real space runs out. Ways to test include checking the real capacity under Settings, copying a large set of files onto the phone and confirming they open correctly, and, for memory cards, using a free capacity-testing tool on a computer. If the phone slows down or loses files as it fills, be suspicious.
Check 5: Packaging, accessories and build quality
Look closely at the box and what is inside it. Printing errors, blurry logos, spelling mistakes, a box that feels flimsy, or accessories that look cheap are all warning signs. Compare the weight, the feel of the buttons, the finish on the frame and the alignment of the camera lenses with a phone you know is genuine. Keep in mind that a sealed box alone proves nothing, because boxes can be resealed; the IMEI and serial checks matter more.
Check 6: Performance and camera
Open several apps, play a video, and take photos in normal and dim light. A genuine flagship should be quick and its camera should behave as reviews of that model describe. Lag, overheating, a camera that produces flat, over-processed images, or a fingerprint sensor that barely works can all point to cheaper hardware inside a copied shell.
Check 7: Blacklisted or locked phones
A stolen phone can be blocked from networks, and some phones are locked to one carrier or tied to a previous owner’s account. Ask the seller to show that the phone is not locked, insert your own SIM and make a call, and confirm the phone can be set up as new without asking for someone else’s login.
Protect yourself before you pay
- Buy from a seller who gives a receipt and a clear return policy.
- Keep the box, receipt and IMEI photo until well after the return window closes.
- Do the checks above while you are still with the seller, or as soon as the phone is delivered.
- If something is wrong, contact the seller straight away and stop using the phone until it is resolved.
Summary
Confirm the IMEI matches in three places, check the serial with the manufacturer, read the real specifications in Settings, test storage and performance, and be cautious of any price that seems too good. If you are still choosing a model, our smartphone buying checklist covers what to look for before you compare sellers.