How to Check if a Phone Is Original or Fake: 6 Checks a Clone Can’t Pass

Why Settings isn’t enough

A clone runs a modified version of Android that can say anything in Settings → About phone: “Galaxy S25 Ultra, 12 GB RAM, 1 TB.” Fake iPhones often run Android with a theme that looks like iOS. So instead of trusting the labels, check what the software doesn’t control well: the graphics chip, the real screen resolution, how fast the phone runs, and the identity numbers that Apple, Samsung and the networks keep.

1. Check the graphics chip with a benchmark

Every model uses a known chip. Every Galaxy S25, for example, uses a Qualcomm Snapdragon with an Adreno GPU, and every iPhone uses an Apple GPU. A clone usually has a cheap MediaTek or Unisoc chip, and the browser reports its real GPU name. Compare against the exact model, not the GPU brand alone: genuine Pixel 6 to 9 phones use an ARM Mali GPU and Pixel 10 uses PowerVR, so Mali on a Pixel 8 is normal but Mali on a Galaxy S25 is not.

Open the MxMob benchmark in Chrome or Safari on the phone.
Look at the GPU line. If the page recognizes the model, it warns you when the GPU doesn’t match.
Run the test. A clone of a flagship scores far lower than the real model, so compare with a real phone of the same model if you can.

A mismatch can also mean a replaced motherboard, which is a reason to walk away in its own right.

2. Check which system it’s really running

Open the device info page in the phone’s browser. A real iPhone reports iOS. A fake iPhone running Android reports Android, however much its home screen looks like iOS. Other quick tells on a fake iPhone: the App Store opens Google Play or a lookalike, Siri doesn’t work, and Settings has Android menus such as Developer options.

3. Measure the screen

Clones often use a lower-resolution, slower screen than the phone they copy.

The screen resolution check works out the physical pixels. Compare with the official spec: a Galaxy S25 Ultra panel is 1440 × 3120, so a 720 × 1600 reading is a clear fail. Some phones lower the resolution in Settings to save battery, so set it to the highest option before testing.
The refresh rate test shows whether a “120 Hz” screen really runs at 120 Hz. Turn off battery saver first, and use Chrome on Android, because Safari limits web pages to 60 Hz.
Look at the display at an angle and on a white screen. Clones and cheap replacement screens often have a blue or yellow tint, a thick bottom border or a fake notch drawn in software.

4. Check the identity numbers

IMEI: dial *#06# and compare with the box and SIM tray. The first eight digits identify the brand and model, so an IMEI check that names a different model is a fail. Our IMEI check guide lists the free checks by country; in India and Pakistan the official reply includes the brand and model.
iPhone serial number: find it in Settings → General → About and enter it on Apple’s Check Coverage page (checkcoverage.apple.com). It should show the same model. A serial number Apple doesn’t recognize means a fake, or a phone built from parts.
Samsung: dial *#0*# to open Samsung’s hidden test menu, which clones don’t have (some US carrier models block it). The Samsung Members app should also install and run its phone diagnostics. See our Samsung diagnostics guide.

5. Original, refurbished or repaired?

A phone can be genuine and still not be what the seller says. “Original” on a listing sometimes means a genuine phone with a cheap replacement screen or battery.

iPhone: Settings → General → About → Parts and Service History lists replaced parts and says whether each is a genuine Apple part. A missing True Tone switch in Display settings can also point to a replaced screen. The used iPhone guide explains what each label means.
Android: most phones have no equivalent screen, so look for uneven gaps around the display, a screen that sits slightly raised, and touch problems near the edges. The dead pixel test and touch test show up many cheap replacement displays.
Refurbished phones from the manufacturer or a reputable seller are genuine and usually come with a warranty. Ask for it in writing.

6. Warning signs before you even meet

A new flagship at half the usual price, especially “sealed” or “imported” stock.
A seller who won’t send the IMEI, won’t let you turn the phone on, or won’t let you insert your SIM.
Storage that seems too good: clones often claim 512 GB or 1 TB but have far less. Copying a few large videos to the phone usually exposes it, because the copy fails or the files come out corrupted.
Camera specs like “200 MP” on a phone whose photos look soft when you zoom in. The camera test shows each lens the browser can see.

Run the full check

Once you’re happy the phone is genuine, test the rest of the hardware with the free phone diagnostic, and go through the used phone checklist for account locks, battery health and network locks.