Two devices. One clear decision.

LAUNCH DATE3 fields

Specification	Poco C81x	C66
Announced	2026, April 23	22 December 2025 (official Oukitel store listing)
Released	2026, April 23	22 December 2025
Status	Available	Available

NETWORK7 fields

Specification	Poco C81x	C66
2G Bands	GSM 850 / 900 / 1800 / 1900	GSM B2 / B3 / B5 / B8
3G Bands	HSDPA 850 / 900 / 2100	WCDMA B1 / B2 / B4 / B5 / B8
4G LTE	1, 3, 5, 8, 28, 40, 41	FDD 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28AB, 66; TDD 34, 38, 39, 40, 41
5G	No	No
EDGE/GPRS	—	Yes
Speed	LTE	HSPA, LTE
Technology	2G / 3G / 4G	GSM / HSPA / LTE

BODY5 fields

Specification	Poco C81x	C66
Build	Glass front, plastic back, plastic frame	Glass front (Panda glass)
Dimensions	171.79 x 77.8 x 8.26 mm	164.5 x 78 x 8.7 mm
IP Rating	IP52	—
SIM	Dual Nano-SIM	Nano-SIM + Nano-SIM (or Nano-SIM + microSD)
Weight	193 g	195 g

DISPLAY7 fields

Specification	Poco C81x	C66
Brightness	650 nits HBM	450 nits
Protection	—	Panda glass
Refresh Rate	120Hz	120Hz
Resolution	720 x 1640 pixels	720 x 1560 pixels (~255 ppi density)
Screen-to-body	~84.1%	—
Size	6.88 inches	6.73 inches
Type	IPS LCD, 120Hz, 650 nits (HBM)	HD+ display, 120Hz, 450 nits

PLATFORM4 fields

Specification	Poco C81x	C66
CPU	Octa-core, up to 1.8GHz	Octa-core (2x 1.8 GHz Cortex-A75 + 6x 1.6 GHz Cortex-A55)
Chipset	Unisoc T7250	Unisoc T615 (12 nm)
GPU	Mali-G57, 850MHz	Mali-G57 (1 core @ 850 MHz)
OS	Android 15	Android 16 (OTA supported)

MEMORY5 fields

Specification	Poco C81x	C66
Card slot	Dedicated memory card slot; up to 2 TB	microSD, up to 1TB (uses SIM 2 slot)
Internal	64 GB	128GB / 256GB / 512GB
RAM	3 GB	4GB / 8GB; virtual RAM expansion up to 16GB (4+12) / 24GB (8+16)
Storage Type	—	uMCP
Storage/RAM variants	64 GB; 3 GB RAM	8GB+512GB (Oukitel store); 4GB+128GB (Jumia Nigeria); spec sheet lists 4GB/8GB RAM and 128GB/256GB/512GB storage

MAIN CAMERA3 fields

Specification	Poco C81x	C66
Features	LED Flash, HDR	LED flash, HDR, panorama, portrait, beauty, AI
MAIN CAMERA	13 MP	64 MP, f/1.8, 1/2" (OmniVision OV64B40), 80.3° FoV, AF | 0.08 MP, 1/10" (GC6133), depth
Video	1080p@30fps	1080p@30fps

SELFIE CAMERA3 fields

Specification	Poco C81x	C66
Features	HDR	Beauty mode
Selfie camera	8 MP	8 MP, f/2.0, 1/4" (Sony IMX219), 77.5° FoV, fixed focus
Video	1080p@30fps	720p@30fps

SOUND2 fields

Specification	Poco C81x	C66
3.5mm jack	Yes	No (headphones via USB Type-C)
Loudspeaker	Yes	Yes, with audio amplifier

COMMUNICATION6 fields

Specification	Poco C81x	C66
Bluetooth	5.2	5.2
NFC	No	Yes
Positioning	GPS; Galileo; GLONASS; QZSS	GPS, GLONASS, BeiDou, Galileo
Radio	FM radio	No
USB	USB-C	USB Type-C, OTG
WLAN	Wi-Fi 5	Wi-Fi 802.11 a/b/g/n/ac, dual-band 2.4G + 5G

FEATURES2 fields

Specification	Poco C81x	C66
Other features	—	0.8 m drop resistance (16 drops); operating temperature -20°C to +55°C; protective case in box
Sensors	Fingerprint (side-mounted), accelerometer, compass	Side-mounted fingerprint, accelerometer (G-sensor), compass, ambient light (no proximity sensor listed)

BATTERY3 fields

Specification	Poco C81x	C66
Capacity	5200mAh	5000 mAh
Charging Type	15W Wired	18W wired (50% in 40 min, 80% in 65 min, 100% in 123 min); reverse charging
Type	Non-removable Li-Ion Battery	Li-Po (polymer) 5000 mAh

ADDITIONAL INFORMATION4 fields

Specification	Poco C81x	C66
Colors	Ice Blue, Crystal Black	Orange; Black; Grey; Gold; Purple
Compatibility	India	4G-only (no 5G); no FM radio; no LTE band 13/71; hybrid SIM/microSD slot; Android 16 at launch
Models	MZB0O3FIN	C66
Price in Nigeria	₦160,000	₦165,600

TESTS2 fields

Specification	Poco C81x	C66
Battery Endurance	—	Video 8 h, calling 35 h, music 24 h, gaming 8 h, standby 830 h (Oukitel manufacturer figures)
Performance	—	AnTuTu 10: 267,410 (Oukitel manufacturer figure)

SECURITY1 field

Specification	Poco C81x	C66
Security	Fingerprint sensor	Side-mounted fingerprint; face unlock