How to Check a Samsung Phone by IMEI (Warranty, Knox Guard & Blacklist)
Samsung Galaxy phones are among the most resold devices in the world — and among the easiest to misrepresent. A used Galaxy can look perfect while hiding an expired warranty, a Knox Guard (KG) lock, or a blacklist flag. A quick Samsung IMEI check reveals all of it.
What a Samsung IMEI check reveals
- Warranty status: whether the device is still covered and until when.
- Knox Guard (KG): Samsung's remote lock used by carriers and enterprises. A KG-locked phone is effectively unusable.
- Blacklist status: whether the IMEI is reported lost or stolen globally.
- Model & spec details: exact model, market and configuration.
Step 1 — Get the IMEI
Dial *#06# on the phone, or find it in Settings → About phone. If you don't have the device yet, see our guide on how to find your IMEI number.
Step 2 — Run the right lookup
- Samsung Warranty & Knox Guard Check — warranty plus KG status in one report.
- Samsung Advanced Info & Knox Guard — deeper device profile including KG lock state.
- Samsung Warranty Check — standard coverage lookup.
- Full IMEI Check — combines device ID, GSMA blacklist and carrier details.
Do not skip the blacklist: a cheap Galaxy is often cheap because it is reported stolen. Always pair a warranty check with the GSMA Blacklist Check before paying.
Bottom line
Verify warranty, Knox Guard and blacklist together. The fastest path is the Full IMEI Check, which covers device, blacklist and carrier in a single report.
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