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Black rectangular smartphone with rounded corners and titanium frame

SAMSUNG

SAMSUNG Galaxy S25 Ultra 512GB 12GB RAM Black cell phones - unlocked

SKU CH-TPA2-VHJJF

An unlocked Android smartphone with a 6.9-inch display, 200-megapixel quad-camera system, 12 GB RAM and 512 GB storage

  • Storage drive512 GB
  • Operating systemAndroid
  • Technology typeGSM / HSPA / LTE
  • Main screen size6.1 in (15.5 cm)
  • RAM capacity12 GB
  • Product colorBlack
  • 9-inch display with 92.5% screen-to-body ratio for immersive viewing
  • 200MP main camera with 3x and 5x optical zoom for detailed photos
  • 12GB RAM and 512GB storage for smooth multitasking and ample space
  • Snapdragon 8 Elite chip with mDNIe technology optimises battery life during video
  • Android 15 with seven major upgrades keeps the phone current for years

What this phone delivers

The Samsung Galaxy S25 Ultra is an unlocked GSM smartphone with 512 GB of storage and 12 GB of RAM. It ships new in black and runs Android 15 with One UI 7. The 6.9-inch display provides a large canvas for media and productivity. A Snapdragon 8 Elite processor handles demanding tasks and AI features.

Who should consider it and who should not

Buyers wanting a flagship camera system with 200 MP, 50 MP and 10 MP sensors plus 3x and 5x optical zoom will find it suited. Users who need dual SIM flexibility on GSM, HSPA and LTE networks are covered. Anyone requiring expandable storage or a smaller 6.1-inch form factor should look elsewhere.

The spec that decides fit

The 512 GB internal capacity is fixed and cannot be increased. If your apps, photos and offline media fit within that space the phone works; if you need more room you must choose a different device.

How it compares

Measured against everything we stock in Unlocked Smartphones, at today’s prices. Recalculated every night.

Price $754.99
Pricier than about 90% of the 2,409 comparable items (median $168.99).
Storage drive 512 GB
Higher than about 90% of the 1,888 comparable items (median 128 GB).

Specifications

Product
Brand nameSamsung
Product colorBlack
Memory
RAM capacity12 GB
Storage
Storage drive512 GB
Display
Main screen size6.1 in (15.5 cm)
Connectivity
Technology typeGSM / HSPA / LTE
Software
Operating systemAndroid

Questions about this item

How much heat or battery drain should I expect from the Snapdragon 8 Elite chip during all-day use?

The upgraded chip includes display image quality enhancement technology (mDNIe) which effectively extends battery life by deeply optimising applications, allowing hours of video viewing.

What must I already own for the dual-SIM GSM unlocked phone to connect to a network?

You need one or two active GSM, HSPA or LTE nano-SIM cards from a compatible carrier; the handset itself is factory unlocked and requires no extra hardware.

Will my existing USB-C chargers and wired headphones work with this Android 15 handset?

The phone runs Android 15 with One UI 7 and uses a standard USB-C port, so existing USB-C power adapters and USB-C headphones or adapters will function normally.

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