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Samsung Galaxy S24 Ultra

Verify your Galaxy S24 Ultra by IMEI. Check warranty, Knox Guard, carrier lock, and model authenticity.

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Galaxy S24 Ultra Model Information

BrandSamsung Electronics
Model NameGalaxy S24 Ultra
Model NumbersSM-S928B (Global), SM-S928U (US Carrier), SM-S928U1 (US Unlocked), SM-S9280 (China)
Release DateJanuary 31, 2024
ChipQualcomm Snapdragon 8 Gen 3 (4nm)
Display6.8-inch Dynamic AMOLED 2X, 120Hz, 2600 nits peak
Storage256GB / 512GB / 1TB
Camera200MP main + 50MP 5x telephoto + 12MP ultrawide + 10MP 3x telephoto
BuildTitanium frame, Gorilla Glass Armor
Special FeaturesBuilt-in S Pen, Galaxy AI, Circle to Search
TAC Code Prefix35843810 / 35843811 / 35843812

How to Verify Your Galaxy S24 Ultra

Check IMEI TAC Code

Dial *#06# to display your IMEI. The first 8 digits are the TAC code. For a genuine Galaxy S24 Ultra, the TAC should start with 358438. If the TAC does not match, the device may be a counterfeit, a different Samsung model, or a replica from another manufacturer.

Verify Model Number

Go to Settings > About Phone > Model Number. It should be SM-S928B, SM-S928U, SM-S928U1, or SM-S9280. A mismatch indicates the device may be a different Samsung model being sold as an S24 Ultra. Also check the serial number format, which should be 11 alphanumeric characters.

Check Knox Warranty and Knox Guard

Samsung Knox is a hardware security platform. If Knox has been tripped (Knox Warranty Void = 0x1), the device has been rooted or modified, voiding the warranty. Our IMEI check can detect Knox status. Knox Guard is a separate carrier feature that locks devices with unpaid balances.

Check Carrier Lock and Blacklist

Before buying a used Galaxy S24 Ultra, verify it is not carrier-locked or blacklisted. Our IMEI check reveals carrier lock status and checks blacklist registries across multiple countries, including the US CTIA database and international GSMA blacklists.

Galaxy S24 Ultra Variants by Region

The Galaxy S24 Ultra comes in four regional variants with different model numbers and network band support:

  • SM-S928B (Global / Europe / Asia): Exynos 2400 in some regions, Snapdragon 8 Gen 3 in others. Supports dual physical nano-SIM + eSIM. Compatible with most global carriers.
  • SM-S928U (US Carrier-locked): Snapdragon 8 Gen 3. Sold through AT&T, T-Mobile, Verizon, and US Cellular. May have carrier bloatware and network locks.
  • SM-S928U1 (US Unlocked): Same hardware as SM-S928U but factory-unlocked. Compatible with all major US carriers. No carrier bloatware.
  • SM-S9280 (China): Snapdragon 8 Gen 3. Dual physical nano-SIM (no Google services pre-installed). Specific bands for Chinese carriers.

When buying a used Galaxy S24 Ultra internationally, verify the model number to ensure it supports the LTE and 5G bands used by your local carrier. A gray-market import may not support certain bands, resulting in limited connectivity or no 5G service.

Verify Your Galaxy S24 Ultra Now

Enter your IMEI to check warranty, Knox, carrier, and model authenticity

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