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Samsung Galaxy A25 5G smartphone in blue-black finish

SAMSUNG

Samsung Galaxy A25 5G SM-A256U 128GB 6GB RAM GSM Unlocked Blue Black cell phones - unlocked

SKU CH-C8TT-EGZNN

Unlocked GSM smartphone with 6.1" AMOLED display, triple 50 MP rear camera, 128 GB storage and 6 GB RAM

  • TechnologyGSM / HSPA / LTE
  • Bands & Frequencies5G: 1, 3, 5, 7, 8, 26, 28, 40, 41, 66, 77, 78 SA/NSA/Sub6
  • Mobile Frequencies850 / 900 / 1800 / 1900 - GSM
  • Data transferLTE
  • Compatible Carrier & ServiceAT&T / T-Mobile
  • Form FactorSmart Phones
  • 5G on 12 supported bands keeps you connected
  • 1" AMOLED screen at 396 ppi shows crisp detail
  • Triple rear camera led by 50 MP sensor captures sharp photos
  • 128 GB storage with 6 GB RAM handles everyday tasks
  • Side-mounted fingerprint sensor unlocks the phone instantly

Samsung Galaxy A25 5G unlocked phone

The Samsung Galaxy A25 5G SM-A256U is an unlocked GSM smartphone with 128 GB of storage and 6 GB of RAM. It operates on 5G bands 1, 3, 5, 7, 8, 26, 28, 40, 41, 66, 77, and 78 plus LTE on 850, 900, 1800, and 1900 MHz. The device is compatible with AT&T and T-Mobile networks and accepts two Nano SIM cards. A side-mounted fingerprint sensor, accelerometer, gyro, and compass are built in.

Sustained use with AMOLED display and triple camera

The 6.1-inch AMOLED screen runs at 1080 x 2340 pixels with a 19.5:9 aspect ratio and roughly 396 ppi density. The rear triple camera array combines a 50 MP main sensor with an 8 MP and a 2 MP module for varied shooting scenarios. Under continuous load the display and camera subsystem draw power steadily, so battery runtime will reflect extended screen-on time and repeated photo capture rather than brief benchmark bursts.

Check carrier bands and SIM needs before ordering

Verify that your carrier supports the listed 5G and LTE bands for full connectivity. Ensure you have Nano SIM cards ready for the dual-slot tray. The phone arrives in a brown box with a generic charging cable and no wall adapter, so confirm you have a compatible USB power source. Buyers who need CDMA network support or a bundled charger should look elsewhere.

Highlights

  • 5G on 12 supported bands keeps you connected
  • 1" AMOLED screen at 396 ppi shows crisp detail
  • Triple rear camera led by 50 MP sensor captures sharp photos
  • 128 GB storage with 6 GB RAM handles everyday tasks
  • Side-mounted fingerprint sensor unlocks the phone instantly

Specifications

BrandSamsung
SeriesSamsung Galaxy A25 5G
ModelSM-A256U
Part NumberSM-A256U
TechnologyGSM / HSPA / LTE
Bands & Frequencies5G: 1, 3, 5, 7, 8, 26, 28, 40, 41, 66, 77, 78 SA/NSA/Sub6
Mobile Frequencies850 / 900 / 1800 / 1900 - GSM
Data transferLTE
Compatible Carrier & ServiceAT&T / T-Mobile
Form FactorSmart Phones
ColorBlack/Blue
SIM CardDual SIM Cards
SIM Card TypeNano SIM
SensorsFingerprint (side-mounted), accelerometer, gyro, compass
Touch ScreenYes
Main Display Size6.1"
Main Display Resolution1080 x 2340 pixels, 19.5:9 ratio
Pixel Density~396 ppi density
Main Display FormatAMOLED
Rear CameraTriple 50 MP + 8 MP + 2 MP
FlashLED
HD Video Capture1080p@30fps
Auto FocusYes
Front-Facing Camera13 MP
Operating SystemAndroid
System ChipExynos 1280 (5 nm)
ProcessorOcta-core (2x2.4 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55)
Processor CoreOcta-core
Processor Speed2x2.4 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55
RAM6GB
Storage128GB
Expansion Slot TypeMicroSDXC
Wi-Fi Support802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
ConnectivityYes
USBUSB Type-C 2.0
Audio Connectors3.5mm jack
Bluetooth SupportBluetooth v5.3
Other ConnectionNFC
Battery Capacity5000mAh
Battery TypeLi-Po Non-removable
Charging25W wired
GPS IntegratedYes
Additional FunctionWi-Fi/GPS/NFC
Specifications16.51 cm (6.5 inch) HD+ Display,5000 mAh non-removable Battery,Exynos 1280 (5 nm)
FeaturesPanorama, HDR
Dimensions (H x W x D)161 x 76.5 x 8.3 mm (6.34 x 3.01 x 0.33 in)
Weight197g (6.95 oz)
Package ContentsGalaxy A25 5G, USB Type C-to-C, Ejection Pin, Quick Start Guide
3G850 / 900 / 1700(AWS) / 1900 / 2100 - HSDPA
4G1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 38, 40, 41, 66 - LTE
CPUExynos 1280

Questions about this item

How warm does the 6.1" AMOLED screen get during all-day use?

The 6.1" AMOLED panel draws modest power, so the handset stays comfortable during extended sessions; no active cooling is needed.

Which nano-SIM cards must I already have for the dual-SIM tray?

Two nano-SIMs are required — one for each slot — and the phone works on GSM, HSPA and LTE bands including 850, 900, 1800 and 1900 MHz.

Will my existing 5G plan on bands n77 or n78 connect at full speed?

Yes, the modem supports 5G SA/NSA on bands n77 and n78 Sub-6, matching those network deployments.

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