Check a Samsung device against manufacturer and network records: the exact model, blacklist status, warranty — and the Knox warranty bit, which permanently changes what the device is worth.
Samsung devices carry two identifiers that answer different questions. The IMEI is the network-side identity and drives the blacklist lookup. The serial number is the manufacturer-side identity and carries warranty, model variant and Knox state.
Regional model variants matter more on Galaxy devices than on iPhones: they differ in supported frequency bands and in how long they receive software updates, and the listing rarely says which variant is on offer.
Dial *#06#: on many Galaxy models this shows the serial number alongside the IMEI. Otherwise both appear under Settings → About phone → Status information, on the box label, and on older removable-battery models under the battery.
Samsung serials are usually eleven alphanumeric characters encoding the production period, the plant and the regional variant. Samsung does not publish the format, so the decoding tables circulating online are reconstructions and do not hold for every product line.
What is dependable is a lookup against the manufacturer's records, where model, purchase date and warranty come from the source rather than from a table.
Model and regional variant, blacklist status across international networks, carrier and network lock, warranty state with purchase date, and the Knox warranty bit.
The Knox bit deserves particular attention. It is a one-way counter that trips as soon as unsigned firmware is flashed. Once tripped, Samsung Pay, Secure Folder and Knox-based enterprise management stay locked permanently, and a factory reset does not restore them.
Ask for both numbers before you travel, and compare the box label against what *#06# reports on the device itself. A mismatch means box and device do not belong together.
An unusually cheap Galaxy with a tripped Knox bit is not a bargain — the missing functions cannot be restored, and resale value stays depressed for the life of the device.
Dial *#06#, or look under Settings → About phone → Status information. It is also on the box label and, on older models with a removable battery, underneath the battery.
The IMEI is the network identifier and drives blacklist checks. The serial number is the manufacturer identifier and carries warranty, model variant and Knox state.
Run the IMEI against the blacklist check. It reports whether the device has been registered as lost, stolen or barred on international networks.
A one-way counter that trips when unsigned firmware is flashed. It permanently disables Samsung Pay, Secure Folder and Knox enterprise features, and it cannot be reset by any means.
Yes, every Galaxy device with a valid IMEI or serial number.
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