Every phone carries a unique identity that most owners never think about. That identity is the IMEI number, a 15-digit code tied to the physical device itself. You need your IMEI number for warranty claims, insurance paperwork, and lost-phone reports. You also need it when buying or selling a second-hand phone safely. This guide shows every reliable way to find it within seconds. It also explains, very clearly, why changing it is both illegal and dangerous.
Keep a copy of the number somewhere safe after you find it. That one small habit can save you days of stress later. First, though, let us understand what this number actually represents.
h2>What Is an IMEI Number?
IMEI stands for International Mobile Equipment Identity, and the name explains its job. The IMEI number identifies the device itself, not your SIM card or phone number. Swap SIM cards freely, and the number stays exactly the same. Networks read this code every time the phone connects to a tower. As a result, carriers can allow or block one specific device very precisely.
The first eight digits reveal the phone’s model and origin. The next six digits form a unique serial for that individual device. The final digit is a check digit that validates the whole sequence. Because of that structure, two phones never share the same code. Even two identical phones from the same factory box carry different numbers. Wikipedia’s reference article on the International Mobile Equipment Identity explains the numbering plan in deeper detail.
The system behind this code is older than smartphones themselves. GSM networks introduced it so operators could recognise every handset individually. Today, that same design protects owners when phones are lost or stolen. It also helps manufacturers track warranty status across millions of devices. Few everyday numbers quietly do so much work in the background.
Behind the scenes, an international registry keeps this whole system organised worldwide. The GSMA oversees the allocation of code ranges to phone manufacturers. Each maker then assigns unique sequences to its own devices in the factory. When a carrier blocks a device, that information can be shared between operators. This cooperation is why a phone reported stolen in one country often fails abroad too. The whole arrangement depends on every code staying unique and completely trustworthy. Retailers rely on the same records when they verify trade-in devices at the counter.
How to Check Your IMEI Number: 7 Easy Methods
You need no special tools or technical skills for this job at all. Every method below takes under a minute on a working phone. Choose whichever method suits your situation best right now. If the phone is dead or already lost, the box and account methods still work.
Method 1: Dial *#06# (The Fastest IMEI Number Check)
Open the phone dialer and type *#06# exactly as shown. Your number appears on the screen instantly, and no call is made. This code works on almost every phone ever made, Android or iPhone. Screenshot the result immediately so you keep a permanent copy. Technicians use this method first because nothing else is faster.
Method 2: Find the IMEI Number in Android Settings
On Android, open Settings and scroll down to “About phone”. Tap it, and the details page lists the model, serial, and identity codes. On dual-SIM phones, each slot shows its own separate entry there. Samsung hides nothing either; the same page shows both codes clearly. Copy the number somewhere safe before you close the page.
Method 3: Find It in iPhone Settings
On an iPhone, open Settings, then General, then About. Scroll down slowly and you will find the IMEI number near the bottom. Dual-SIM iPhones list two separate entries, one for each line. Long-press the number to copy it into the clipboard quickly. Then paste it into a note or an email for safekeeping.
Method 4: Check the SIM Tray and the Phone Body
Many manufacturers print the IMEI number directly on the SIM tray itself. Eject the tray with a pin and read the tiny engraving under good light. Some older phones print it on a sticker beneath the back cover. You may need a magnifier, because the print is genuinely small. Fortunately, this method works even when the phone refuses to switch on.
Method 5: Read the Box and the Purchase Invoice
The retail box label carries the same code beside the barcode. Your purchase invoice or shop receipt usually repeats it as well. These paper records matter greatly when the phone is lost or stolen. They prove the device is yours during a police report. Photograph the box label today and store the photo safely in the cloud.
Method 6: Use Your Google or Apple Account Online
If the phone is already lost, your online account may still show it. Google account users can view linked devices inside the Find My Device service. Apple users see their devices listed inside their Apple ID account page. Each listing shows the model and its registered identity details. Retrieve the code there before you contact your carrier.
Method 7: Ask Your Carrier Directly
Your mobile carrier registered the device when you first used their SIM. Their support team can confirm the code linked to your line. Call them from another phone and verify your account identity first. Then ask them to read back the device’s registered number slowly. Compare it with your own records to be certain everything matches.
How to Read an IMEI Number: TAC, Serial and Check Digit
At first glance, the fifteen digits look completely random and meaningless. In reality, every block of digits carries specific information about the phone. The first eight digits form the Type Allocation Code, or TAC. That block identifies the exact model and its approval body. The following six digits are the device’s individual serial number. Finally, the last digit checks the whole sequence for errors.
This structure helps checking services verify that a code is genuine. A made-up number usually fails the final check-digit calculation immediately. It also explains why one digit wrong makes a code useless. When you copy your number, read it back once to confirm accuracy. Technicians do this habitually during every check at the counter. Small care here prevents large paperwork problems later.
IMEI Number vs Serial Number vs MEID: The Differences
Phone owners often confuse these three identifiers, so let us separate them clearly. The serial number is the manufacturer’s own code for production and warranty tracking. It appears in settings and on the box, just like the identity code. However, mobile networks do not use the serial number at all. They recognise devices only through the network identity code described above.
The MEID is a close cousin used mainly by older CDMA networks. Some phones display both identifiers inside the same settings page. For most modern GSM and LTE users, only the IMEI number matters day to day. Carriers, police, and insurers all ask for that specific code. Knowing which number to quote saves time in every support conversation.
IMEI Numbers on Dual-SIM Phones, Explained
Dual-SIM phones genuinely carry two identity codes, one for each SIM slot. Each slot presents its own radio identity to the mobile network. Therefore, an IMEI number check may show two similar but different codes. Both belong to the same physical phone, so record both of them carefully. Warranty and insurance documents should list the primary one, usually slot one.
This arrangement sometimes confuses second-hand buyers during their checks. They see two codes and worry that one of them must be fake. In reality, two codes are the normal sign of a dual-SIM model. What matters is that the first code matches the box label exactly. If neither code matches the box, walk away from that deal. A mismatched IMEI number is always a serious red flag.
When You Will Need Your IMEI Number
Most owners meet this code only during an emergency, unfortunately. A little preparation now turns that emergency into one simple phone call. Keep the number in your email, cloud notes, or even your wallet. Then every situation below becomes much easier to handle calmly. Here are the moments when your IMEI number truly earns its keep.
- Lost or stolen phone: give the code to your carrier and the police, so the device can be blocked.
- Warranty claims: manufacturers verify the exact device and its warranty period from this code.
- Insurance: policies are registered against the device code, not just the model name.
- Repairs: service centres log the code to track your exact phone through the workshop.
- Selling safely: buyers trust a seller who shares the code for verification in advance.
Using an IMEI Number Check Before Buying Second-Hand
Second-hand phones offer great value, but they also carry real risks. A short, careful check protects you from the worst of them. First, dial *#06# on the phone while it sits in front of you. Then compare the displayed code with the box and the settings page. All three must agree perfectly before any money changes hands.
Next, ask your carrier or a reputable checking service about the device’s status. A reported-stolen phone appears on a blacklist shared between networks. Such a phone may stop working on your SIM without any warning. Also confirm that the model the code reports matches the phone in your hand. Finally, make sure the previous owner has signed out of their accounts completely.
A phone still linked to someone else’s Google account will trigger its factory reset protection during setup. Our FRP lock explainer describes that protection in full detail. Five careful minutes of checking here prevent months of regret later. Never let a hurried seller rush you past these simple steps.
Lost or Stolen? Your IMEI Number Blocks the Phone
If the worst happens, act quickly and in the right order. First, contact your carrier and report the loss with your IMEI number ready. They can blacklist the device across their network almost immediately. As a result, the phone stops working with any SIM on that network. Next, file a police report and include exactly the same code. Insurers usually require that report number before they pay any claim.
While you handle the reports, protect your online accounts as well. Change the passwords of accounts that were signed in on the phone. Email, banking, and social accounts deserve priority, in that order. Use each provider’s device page to sign the lost phone out remotely. Most services also let you display a contact number on the lock screen. That small step helps an honest finder return the device to you. Finally, keep copies of every report and reference number you receive. Insurers and carriers both ask for them during follow-up calls. Acting within the first hour gives you the best chance of a clean outcome.
Blacklisting works because networks check the code at every connection attempt. A blocked device cannot register, make calls, or use mobile data. This protection is exactly why the code must stay unique and unchanged. It is also why you should include the number inside your own records. Add it to the backup routine described in our Android backup checklist, alongside your photos and accounts.
Why You Must Never Change an IMEI Number
Some websites and shady services advertise “IMEI repair” or identity changing. Let us be completely clear about what that really means in practice. Altering this code disguises a device’s true identity from the network. That is precisely why criminals reprogram stolen phones before selling them on. In many countries, changing an IMEI number is a criminal offence. This site does not publish such guides, and it never will.
The practical risks match the legal ones for ordinary owners too. A changed code can break network registration permanently and without warning. It can also void the warranty and fail carrier checks later. Legitimate workshops never rewrite a phone with a borrowed identity. Manufacturers may restore the original code after a motherboard replacement, using factory tools. That restoration uses the device’s own original IMEI number, never a new one. Anything else offered to you is a red flag, so simply walk away.
Common IMEI Number Myths, Debunked
Myth: the code reveals your personal location to anyone. In reality, the code identifies hardware, not a person or a place. Networks log connections for their own operations, as they do with every device. Ordinary people cannot track you from this number alone.
Myth: a factory reset quietly changes the code. Actually, the code is fixed in hardware and survives resets and updates. Despite what some forums claim, resets never touch it at all. If the code on screen differs from the box, something is genuinely wrong.
Myth: sharing the code lets strangers clone your phone. Sharing it for a sale or a warranty claim is completely normal practice. Cloning requires far more than a publicly printed identity code. Still, avoid posting the full number on public forums unnecessarily.
FAQ: IMEI Number Questions Answered
Can I find my IMEI number if the phone is switched off?
Yes, the SIM tray engraving and the box label both work without power. Your online Google or Apple account may also list the device for you. Finally, your carrier can confirm the code registered to your line. One of these four routes almost always succeeds in practice.
Does a factory reset change the IMEI number?
No, a reset erases user data and settings only. The identity code lives inside the hardware and stays identical afterwards. This permanence is deliberate, because networks depend on it for blocking stolen devices. If a reset phone shows a different code, it was altered beforehand. Treat that discovery seriously and contact the seller at once.
Why does my phone show two IMEI numbers?
Because dual-SIM phones carry one identity code for each SIM slot. Both codes belong to the same physical phone, and both are fully legitimate. Record both numbers together with your other important phone documents. When a form asks for only one, use the slot one entry. That is the primary code manufacturers register first.
Is it safe to give my IMEI number to a buyer?
Yes, sharing it with a genuine buyer for verification is standard practice. Buyers use it to confirm the phone is not stolen or blacklisted. Avoid posting it publicly on open forums, though, where anyone can copy it. Share it privately inside the sale conversation instead. That balance keeps both sides safe and transparent.
What should I do if the IMEI number does not match the box?
Do not complete the purchase, because a mismatch signals real trouble. The phone may be stolen, rebuilt from mixed parts, or previously altered. Honest sellers can always explain a phone’s history clearly and calmly. If the explanation feels vague, walk away without any hesitation. Another phone will appear soon, but a bad purchase lingers.
The Takeaway: Know Your IMEI Number
Your phone’s identity code takes ten seconds to find and a lifetime to matter. Dial *#06# today, save a screenshot, and keep the box label somewhere safe. Use the code for warranty claims, insurance, and confident second-hand checks. Above all, never let anyone change it, whatever they may promise you. Treat your IMEI number like the phone’s fingerprint, because that is exactly what it is.
