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Black rectangular smartphone with a built-in S Pen slot and a large 6.8-inch display

GAMAKOO

GAMAKOO Snapdragon8 G25 Ultra S Pen 8GB 256GB 6.8" 6000mAh cell phones - unlocked

SKU CH-1GE6-M39G0 MPN Snapdragon8

An unlocked Android 15 smartphone with a built-in S Pen, 48MP rear and 16MP front cameras, 8GB RAM, 256GB expandable storage, 6.8-inch display and a 6000mAh battery

  • Technology5G
  • ColorBlack
  • SIM CardDual SIM Cards
  • SIM Card TypeNano SIM
  • Secondary SIM Card TypeNano SIM
  • Touch ScreenYes

Color Black

Struck-through versions exist but are not stocked here.

  • S Pen unlocks creative workflows with precise input
  • 8 GB RAM and 256 GB storage keep multitasking smooth
  • 48 MP rear camera captures detailed photos
  • 8 inch HD Full Display gives a wide view
  • 6000 mAh battery supports long usage between charges

GAMAKOO G25 Ultra with S Pen

The GAMAKOO G25 Ultra is a factory-unlocked Android 15 smartphone equipped with a Snapdragon 8 Gen2 deca-core processor and 8 GB of RAM. It offers 256 GB of internal storage and a microSD expansion slot for additional space. Dual nano-SIM slots support 5G and 4G connectivity for flexible network use.

S Pen for productivity and creativity

The integrated S Pen unlocks greater productivity and creative potential on the 6.8-inch HD Full Display. It enables precise input for note-taking, sketching and navigation. The stylus works directly with the touchscreen without requiring a separate pairing process or battery charging.

6000 mAh battery for extended use

A massive 6000 mAh battery powers the device through heavy daily workloads without frequent recharging. The large capacity supports the 6.8-inch display and 5G modem while maintaining manageable thermals during typical operation. A charger is included in the box for convenient replenishment.

Highlights

  • S Pen unlocks creative workflows with precise input
  • 8 GB RAM and 256 GB storage keep multitasking smooth
  • 48 MP rear camera captures detailed photos
  • 8 inch HD Full Display gives a wide view
  • 6000 mAh battery supports long usage between charges

Specifications

BrandGAMAKOO
ModelGAMAKOO G25 Ultra S Pen
Technology5G
ColorBlack
SIM CardDual SIM Cards
SIM Card TypeNano SIM
Secondary SIM Card TypeNano SIM
Touch ScreenYes
Rear Camera48MP
FlashYes
Front-Facing Camera16 MP
Operating SystemAndroid 15
System ChipSnapdragon 8 Gen2
ProcessorDeca Core
Processor CoreDeca Core
RAM8GB
Storage256GB
Expansion Slot TypeMicroSD
Wi-Fi SupportYes
ConnectivityYes
USBUSB Type-C
Bluetooth SupportYes
Battery Capacity6000mAh
ChargingFast Charging
GPS IntegratedYes
Additional FunctionGPS
Package Contents1 x GAMAKOO G25 Ultra 5G S Pen Smartphone 1 x Charger Adapter, 1 x USB Cable, 1 x Earphones, 1 x Stylus, 1 x User Manual, 1 x Phone case, 1 x Protection film
Qwerty KeyboardNo
EmailEmail
Warranty1 Year

Other versions of this model

2 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How does the Snapdragon 8 Gen2 and 8 GB of RAM perform in daily use?

The deca-core processor and 8 GB of memory keep Android 15 responsive during multitasking, gaming and heavy app switching without noticeable lag.

What networks does the dual Nano-SIM tray actually support?

Both slots accept Nano-SIM cards and connect to 4G and 5G networks; one slot doubles as a MicroSD expansion slot if you need extra storage.

Will the 6.8-inch screen and 6000 mAh battery fit in a standard pocket?

The 6.8-inch display makes this a large handset, but the slim bar-style chassis still slides into most trouser pockets; the 6000 mAh cell adds minimal bulk.

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