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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

  • CPUDeca Core
  • Storage drive256 GB
  • Connection optionsYes
  • Operating systemAndroid 15
  • Technology type5G
  • SIM configurationDual SIM Cards

Color Black

  • 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.

How it compares

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

Price $163.99
Typical for this category: the median of 2,409 items is $168.99.
Storage drive 256 GB
Higher than about 70% of the 1,888 comparable items (median 128 GB).

Specifications

Product
Brand nameGAMAKOO
Model nameGAMAKOO G25 Ultra S Pen
Product colorBlack
Processor
CPUDeca Core
Processor chipSnapdragon 8 Gen2
Core configurationDeca Core
Memory
RAM capacity8 GB
Storage
Storage drive256 GB
Display
TouchscreenYes
Audio & video
Back camera48MP
Camera flashYes
Selfie camera16 MP
Connectivity
Connection optionsYes
Technology type5G
SIM configurationDual SIM Cards
SIM typeNano SIM
Second SIM typeNano SIM
Wi-Fi capabilityYes
BluetoothYes
Built-in GPSYes
Extra radiosGPS
Ports & slots
Expansion slotMicroSD
USB portsType-C
Power
Battery capacity6,000 mAh
Charging optionsFast Charging
In the box
In the box1 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
Software
Operating systemAndroid 15
Email supportEmail
More details
QWERTY keyboardNo

Other versions of this model

2 more in the same range

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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