Screen size
Poco C516.5"
Poco C81xWinner: 6.9"+5.2%
Quick verdict
Poco C81x leads the measured specs 10-4.
Measured wins
Poco C51
4
spec wins
Ties
7
equal specs
Poco C81x
10
spec wins
Overall winner
Screen size
Technology
Poco C51
GSM / HSPA / LTE
Poco C81x
GSM / HSPA / LTE
2G bands
Poco C51
GSM 850 / 900 / 1800 / 1900
Poco C81x
GSM 850 / 900 / 1800 / 1900
3G bands
Poco C51
HSDPA 850 / 900 / 2100
Poco C81x
HSDPA 850 / 900 / 2100
4G bands
Poco C51
1, 3, 5, 8, 40, 41
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
equal specsMain camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Poco C81x
1, 3, 5, 8, 28, 40, 41
Speed
Poco C51
HSPA, LTE
Poco C81x
HSPA, LTE
Announced
Poco C51
2023, April 07
Poco C81x
2026, April 23
Status
Poco C51
Available. Released 2023, April 13
Poco C81x
Available. Released 2026, April 23
Dimensions
Poco C51
164.9 x 76.8 x 9.1 mm (6.49 x 3.02 x 0.36 in)
Poco C81x
171.8 x 77.8 x 8.3 mm (6.76 x 3.06 x 0.33 in)
Weight
Poco C51
192 g (6.77 oz)
Poco C81x
193 g (6.81 oz)
SIM
Poco C51
Nano-SIM + Nano-SIM
Poco C81x
Nano-SIM + Nano-SIM
Other
Poco C51
-
Poco C81x
Dust and splash resistant
Type
Poco C51
IPS LCD, 400 nits (typ)
Poco C81x
IPS LCD, 120Hz, 650 nits (HBM)
Size
Poco C51
6.52 inches, 102.6 cm2 (~81.0% screen-to-body ratio)
Poco C81x
6.88 inches, 112.4 cm2 (~84.1% screen-to-body ratio)
Resolution
Poco C51
720 x 1600 pixels, 20:9 ratio (~269 ppi density)
Poco C81x
720 x 1640 pixels (~260 ppi density)
OS
Poco C51
Android 13 (Go edition), MIUI
Poco C81x
Android 15, up to 2 major Android upgrades
Chipset
Poco C51
Mediatek Helio G36 (12 nm)
Poco C81x
Unisoc T7250 (12 nm)
CPU
Poco C51
Octa-core (4x2.2 GHz Cortex-A53 & 4x1.7 GHz Cortex-A53)
Poco C81x
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
GPU
Poco C51
PowerVR GE8320
Poco C81x
Mali-G57 MP1
Card slot
Poco C51
microSDXC (dedicated slot)
Poco C81x
microSDXC (dedicated slot)
Internal
Poco C51
64GB 4GB RAM, 128GB 6GB RAM
Poco C81x
64GB 3GB RAM
Other
Poco C51
eMMC 5.1
Poco C81x
-
Single
Poco C51
8 MP, f/2.0, (wide) Auxiliary lens
Poco C81x
13 MP, f/2.2, (wide)
Features
Poco C51
Dual-LED flash, HDR
Poco C81x
LED flash, HDR
Video
Poco C51
1080p@30fps
Poco C81x
1080p@30fps
Single
Poco C51
5 MP, f/2.2
Poco C81x
8 MP, f/2.0, (wide)
Video
Poco C51
1080p@30fps
Poco C81x
1080p@30fps
Features
Poco C51
-
Poco C81x
HDR
Loudspeaker
Poco C51
Yes
Poco C81x
Yes
3.5mm jack
Poco C51
Yes
Poco C81x
Yes
WLAN
Poco C51
Wi-Fi 802.11 b/g/n
Poco C81x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
Poco C51
5.0, A2DP, LE
Poco C81x
5.2, A2DP, LE
Positioning
Poco C51
GPS, GLONASS, BDS
Poco C81x
GPS, GALILEO, GLONASS, QZSS
NFC
Poco C51
No
Poco C81x
No
Radio
Poco C51
FM radio, recording
Poco C81x
FM radio
USB
Poco C51
microUSB 2.0, OTG
Poco C81x
USB Type-C 2.0, OTG
Sensors
Poco C51
Fingerprint (rear-mounted), accelerometer
Poco C81x
Fingerprint (side-mounted), accelerometer, compass
Other
Poco C51
-
Poco C81x
Virtual proximity sensing
Type
Poco C51
Li-Po 5000 mAh
Poco C81x
5200 mAh
Charging
Poco C51
10W wired
Poco C81x
15W wired 7.5W reverse wired
Colors
Poco C51
Power Black, Royal Blue
Poco C81x
Ice Blue, Crystal Black
Models
Poco C51
MZB0E6DIN, MZB0DXKIN, 2302EPCC4I, 2305EPCC4G, 2302EPCC4H
Poco C81x
-
SAR
Poco C51
0.97 W/kg (head) 0.87 W/kg (body)
Poco C81x
-
Price
Poco C51
About 100 EUR
Poco C81x
About 90 EUR