Our Samsung IMEI checker retrieves data from Samsung's warranty servers and global carrier networks. Here is what your report includes:
Full Samsung model number (e.g., SM-S928BZKDEUE), model name (Galaxy S25 Ultra), color, and storage capacity. Confirms the exact device so sellers cannot misrepresent what they are selling.
Which Samsung factory built the device (e.g., SEHV = Vietnam, SEC = Korea, SEDA = China, SEHI = India, SEHZ = Brazil). Helps verify authenticity — counterfeit phones will not return valid factory data.
Whether Samsung's warranty is active or expired, with exact start and end dates. Also shows the original production date and ship date. Critical for verifying true device age.
Whether the phone has been reported lost, stolen, or blocked by any carrier worldwide through the global blacklist. A blacklisted Samsung phone cannot connect to cellular networks. For a dedicated lookup, use our IMEI Blacklist Check.
Whether Samsung Knox Guard is active on the device. Knox Guard allows carriers, insurance companies, and employers to remotely lock the phone. Statuses include OFF, Active, Locked, or Completed. Knox Guard verification may require an extended check. See our detailed Knox Guard explanation below.
The original carrier (e.g., AT&T, Vodafone, Orange) and whether the phone is SIM-locked or factory unlocked. Shows the "Sales Buyer" (original carrier that purchased from Samsung) and current lock status.
Two separate data points: the country where the device was sold and the country it was shipped to. When these differ, the device may be a grey import with limited local warranty.
Three dates: when the phone was manufactured, when Samsung shipped it, and when it was sold to the first buyer. A phone produced 2 years ago but sold as "new" is a red flag.
The device serial number, DO Number (delivery order), SKU code, and second IMEI for dual-SIM models. Useful for cross-referencing warranty claims with Samsung support.
The full Samsung SKU (e.g., SM2S928BZKDEUE) which encodes the model, color, region, and carrier variant. Confirms the exact regional specification of the device.
Whether the device has an outstanding financial obligation (installment plan, lease, or loan). A phone marked as financed may still be under contract — if the original owner stops paying, the carrier can blacklist it.
Whether Samsung's servers recognize the IMEI as a valid Samsung device. If the IMEI is not found in Samsung's database, the device may be counterfeit or tampered with.
Most Samsung Galaxy phones are dual-SIM devices — they have two IMEI numbers. IMEI1 is assigned to the primary SIM slot, and IMEI2 is assigned to the secondary SIM slot or eSIM. When you dial *#06# on your Samsung phone, both numbers are displayed.
Always use IMEI1 for verification. Here is why:
When a phone is reported lost or stolen, carriers typically blacklist IMEI1 — the primary identifier. In many cases, IMEI2 may remain clean even when the device is blacklisted. This means checking only IMEI2 can give a false "clean" result and lead you to purchase a blocked phone.
The same applies to warranty, Knox Guard status, and carrier lock information — Samsung's servers index device records primarily by IMEI1. Checking IMEI2 may return incomplete or inaccurate data.
How to identify IMEI1: Dial *#06# — IMEI1 is always listed first. In Settings → About Phone, it is labeled "IMEI (Slot 1)" or simply "IMEI." IMEI2 is labeled "IMEI (Slot 2)" or "IMEI2."
You do not need to check both. If you verify IMEI1 and the result is clean, there is no need to also check IMEI2. One check on IMEI1 gives you the full picture.
Open the Phone app and dial *#06#. Your IMEI1, IMEI2 (for dual-SIM models), and serial number will appear instantly. This works on every Samsung Galaxy phone and tablet with cellular connectivity.
Go to Settings → About Phone (or About Tablet). Your IMEI, serial number, and model number are listed there. On newer One UI versions, also under Settings → About Phone → Status Information.
The IMEI is printed on a sticker on the original Samsung box. On some older models with removable batteries, it is also printed under the battery. On newer Galaxy phones, check the SIM card tray.
Open the Samsung Members app (pre-installed on all Galaxy devices) and tap the Support tab, then tap your device name at the top. Your IMEI, serial number, and model details are displayed there.
Samsung Galaxy phones can have up to four different types of security locks. Each one works independently — a phone can have one, multiple, or none of them active. Understanding these locks is critical before buying a used Samsung, because some of them cannot be removed by factory reset and can permanently block access to the device.
Samsung Knox Guard is a cloud-based device management platform that allows carriers, insurance companies, leasing providers, and enterprise organizations to remotely control Samsung devices. It is primarily used for fraud and theft protection on financed devices.
How Knox Guard works: When a carrier sells you a Samsung phone on installments, they register the device's IMEI in the Knox Guard console. From that point, the carrier can remotely lock the phone, display custom messages on the lock screen, restrict app installation, control SIM card changes, and even wipe the device — all without physical access.
Knox Guard status flow (from Samsung's official documentation):
Knox Guard devices go through a defined lifecycle of states:
MDM is a broader category of enterprise software that allows organizations to remotely manage, configure, and secure employee devices. Samsung supports MDM through Knox Mobile Enrollment (KME) and Knox Manage, as well as third-party solutions like Microsoft Intune, VMware Workspace ONE, and ManageEngine.
When a Samsung phone is enrolled in MDM, the organization can enforce password policies, restrict which apps can be installed, disable camera or screen capture, prevent factory reset, block USB debugging, and remotely wipe the device.
Why MDM matters when buying used: Enterprise devices that have been resold — sometimes without the company's knowledge — may still be enrolled in MDM. The phone might work normally for weeks or months, then suddenly get locked when the company's admin pushes a new policy or notices the device is still active. MDM enrollment persists through factory reset — when the device connects to the internet after a reset, it automatically re-enrolls into the organization's MDM system. Unlike Knox Guard, MDM enrollment may not be visible in a standard IMEI check — but in some cases, the Knox Guard status can indicate enterprise enrollment.
How to check manually: On the device, go to Settings → Biometrics and Security → Device Admin Apps. If you see entries like "KC Client," "Knox Enrollment Service," or any unfamiliar management app, the device may be MDM-enrolled. Ask the seller to have the organization remove the MDM profile before purchasing.
Samsung Account Lock — also called Reactivation Lock — is Samsung's anti-theft feature, similar to Apple's Activation Lock. When enabled through Samsung's Find My Mobile service, the device requires the original Samsung account credentials after a factory reset.
This feature is tied to the Samsung account (not Google), and it must be manually enabled by the user in Settings → Biometrics and Security → Find My Mobile → Reactivation Lock. It is not enabled by default on most models.
Why it matters when buying used: If the seller performed a factory reset without removing their Samsung account, the phone will ask for their Samsung account email and password during setup. Without these credentials, the phone cannot be activated. Only the original Samsung account owner can disable this — Samsung support will only assist with proof of ownership (purchase receipt + matching IMEI).
Before buying: Ask the seller to sign out of their Samsung account (Settings → Accounts → Samsung Account → Remove Account) and disable Find My Mobile. Then connect the device to the internet and verify the setup completes without asking for any Samsung account credentials. Samsung Reactivation Lock only triggers during the setup process when the device is online. If they cannot complete this process in front of you, do not purchase the device.
Factory Reset Protection (FRP) is a security feature built into Android 5.1 and later — it is not Samsung-specific, but affects all Samsung Galaxy phones. FRP activates automatically when you add a Google account and set a screen lock. After a factory reset (performed through recovery mode or remote wipe), the phone requires the previously synced Google account credentials before it can be set up again.
FRP cannot be detected through an IMEI check. There is no remote database that stores FRP status by IMEI — it is stored locally on the device. This makes it a risk that can only be verified with the phone in hand.
Why it matters when buying used: If the previous owner factory reset their Samsung phone without first removing their Google account, you will be locked out at the setup screen. The phone will display "This device was reset. To continue, sign in with a Google Account that was previously synced on this device." Without the correct Google credentials, the phone is unusable.
Before buying: Ask the seller to perform the factory reset in front of you from Settings → General Management → Reset → Factory Data Reset (not from recovery mode). When done through Settings, FRP is properly cleared. After the reset, immediately connect the phone to Wi-Fi and go through the entire initial setup process. FRP only triggers when the device connects to the internet during setup — a phone that was reset but kept offline will appear clean until it goes online. If the phone asks for a Google account you do not own during setup, do not purchase the device.
| Lock Type | Who Controls It | Survives Factory Reset? | Visible in IMEI Check? | How to Verify |
|---|---|---|---|---|
| Knox Guard | Carrier / Insurance / Employer | Yes — re-activates on internet | Yes — via IMEI check | Run a Samsung IMEI check with Knox Guard verification |
| MDM | Employer / Organization | Yes — auto re-enrolls on internet | Partially — may show as Knox Guard Active | Check Settings → Device Admin Apps on device |
| Samsung Account Lock | Device owner (Samsung account) | Yes — triggers during setup on internet | No | Ask seller to sign out + connect to internet during meeting |
| Google FRP | Device owner (Google account) | Yes — triggers during setup on internet | No | Ask seller to factory reset from Settings + complete full setup online |
Blacklist: CLEAN — Not reported lost or stolen. Safe to use on all carrier networks.
Blacklist: BLACKLISTED — Reported to the blacklist. Blocked from cellular networks. Do not buy.
Knox Guard: OFF — No remote lock restrictions. The device was never enrolled in Knox Guard. Safe to buy.
Knox Guard: Completed — Previously managed by Knox Guard (e.g., financed phone fully paid off). Knox Guard has been permanently uninstalled. Safe to buy.
Knox Guard: Active — Currently managed through Knox Guard. The device can be remotely locked at any time. Do not buy unless the seller can prove release.
Knox Guard: Locked — The managing organization has remotely locked the device. The phone is currently unusable. Do not buy.
SIM Lock: Open (Unlocked) — Factory unlocked. Works with any SIM card from any carrier worldwide.
SIM Lock: Locked — Restricted to the original carrier network. Must be unlocked before switching operators.
Warranty: Active — Samsung's warranty is valid. The report shows exact start and end dates.
Warranty: Expired — Warranty has ended. Repairs are at full price.
Finance: No — No outstanding financial obligations on the device.
Finance: Yes — The device has an active loan, lease, or installment plan. If payments stop, the carrier can blacklist it.
IMEI Valid / Original — Samsung's servers recognize the IMEI. The device is a genuine Samsung product.
IMEI Not Found — Samsung's database does not recognize this IMEI. The device may be counterfeit, refurbished with a replaced mainboard, or tampered with.
Knox Guard and MDM enrollment allow carriers and employers to remotely lock the phone at any time. A factory reset will not remove these locks — they re-activate the moment the phone connects to the internet. Verify Knox Guard status through an IMEI check before buying.
A blacklisted Samsung phone is permanently blocked from cellular networks. Always check using IMEI1 (the primary IMEI) — IMEI2 may show clean even when the phone is actually blacklisted.
A Galaxy phone locked to T-Mobile US will not work with European operators. Our check reveals the exact carrier and lock status, so you know whether an unlock is needed.
Samsung warranty includes exact dates: production, ship, sold, and warranty end. Our check shows all four, so you can verify how old the device truly is and whether it is still covered.
A phone sold in one country but shipped to another may have limited warranty and miss regional features (carrier bands, software). Our check shows both Sold By Country and Ship To Country.
Counterfeit Galaxy phones are common on marketplaces. Our IMEI check verifies the device against Samsung's official database. If the IMEI is not found, the phone may be fake.
Unlike iPhones which have a visible iCloud lock, stolen Samsung phones are harder to detect. This makes checking the IMEI essential before any purchase.
Here is the complete verification process:
Step 1 — Get the correct IMEI. Ask the seller for the IMEI from Settings → About Phone. Make sure they provide IMEI1 (the first IMEI listed). If they only provide IMEI2, ask for IMEI1 specifically — IMEI2 may show a clean blacklist even when the device is actually blocked.
Step 2 — Run our check. Enter IMEI1 above. Your report will show the Blacklist Status, Knox Guard Status, and Finance Status — the three critical fields for detecting stolen or problematic devices.
Step 3 — Check for red flags:
Step 4 — In-person verification (critical). When meeting the seller, check Settings → Biometrics and Security → Device Admin Apps for MDM enrollment. Ask them to sign out of both their Samsung account and Google account in front of you, then perform a factory reset from Settings (not recovery mode) to clear FRP. After the reset, connect the device to Wi-Fi or mobile data immediately — do not pay until you have completed the full initial setup with the phone connected to the internet. Knox Guard, MDM, Samsung Account Lock, and FRP all re-activate only when the device goes online. A phone that looks clean in airplane mode can become locked the moment it connects. Set up the phone with your own Google and Samsung accounts and verify everything works before paying.
If Blacklist shows CLEAN, Knox Guard shows OFF or Completed, Finance shows No, and the IMEI is recognized as valid — the phone is most likely safe to purchase.
Our checker supports every Samsung Galaxy device ever released:
Also supports all older Galaxy S, J, On, and XCover series models.