Screen size
Poco C81xWinner: 6.9"+13%
Redmi S2 (Redmi Y2)6.0"
Quick verdict
Poco C81x leads the measured specs 10-5.
Measured wins
Poco C81x
10
spec wins
Overall winner
Ties
6
equal specs
Redmi S2 (Redmi Y2)
5
spec wins
Screen size
Technology
Poco C81x
GSM / HSPA / LTE
Redmi S2 (Redmi Y2)
GSM / CDMA / HSPA / LTE
2G bands
Poco C81x
GSM 850 / 900 / 1800 / 1900
Redmi S2 (Redmi Y2)
GSM 850 / 900 / 1800 / 1900 , CDMA 800 & TD-SCDMA - China
3G bands
Poco C81x
HSDPA 850 / 900 / 2100
Redmi S2 (Redmi Y2)
HSDPA 850 / 900 / 1900 / 2100
4G bands
Poco C81x
1, 3, 5, 8, 28, 40, 41
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
equal specsStorage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Redmi S2 (Redmi Y2)
1, 3, 4, 5, 7, 8, 20, 38, 40 - Global, 1, 3, 5, 40, 41 - India, 1, 3, 5, 7, 8, 34, 38, 39, 40, 41 - China
Speed
Poco C81x
HSPA, LTE
Redmi S2 (Redmi Y2)
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Announced
Poco C81x
2026, April 23
Redmi S2 (Redmi Y2)
2018, May. Released 2018, May
Status
Poco C81x
Available. Released 2026, April 23
Redmi S2 (Redmi Y2)
Discontinued
Dimensions
Poco C81x
171.8 x 77.8 x 8.3 mm (6.76 x 3.06 x 0.33 in)
Redmi S2 (Redmi Y2)
160.7 x 77.3 x 8.1 mm (6.33 x 3.04 x 0.32 in)
Weight
Poco C81x
193 g (6.81 oz)
Redmi S2 (Redmi Y2)
170 g (6.00 oz)
SIM
Poco C81x
Nano-SIM + Nano-SIM
Redmi S2 (Redmi Y2)
Nano-SIM + Nano-SIM
Other
Poco C81x
Dust and splash resistant
Redmi S2 (Redmi Y2)
-
Build
Poco C81x
-
Redmi S2 (Redmi Y2)
Glass front, plastic back, plastic frame
Type
Poco C81x
IPS LCD, 120Hz, 650 nits (HBM)
Redmi S2 (Redmi Y2)
IPS LCD
Size
Poco C81x
6.88 inches, 112.4 cm2 (~84.1% screen-to-body ratio)
Redmi S2 (Redmi Y2)
5.99 inches, 92.6 cm2 (~74.5% screen-to-body ratio)
Resolution
Poco C81x
720 x 1640 pixels (~260 ppi density)
Redmi S2 (Redmi Y2)
720 x 1440 pixels, 18:9 ratio (~269 ppi density)
OS
Poco C81x
Android 15, up to 2 major Android upgrades
Redmi S2 (Redmi Y2)
Android 8.1 (Oreo), upgradable to Android 9, MIUI 12
Chipset
Poco C81x
Unisoc T7250 (12 nm)
Redmi S2 (Redmi Y2)
Qualcomm MSM8953 Snapdragon 625 (14 nm)
CPU
Poco C81x
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
Redmi S2 (Redmi Y2)
Octa-core 2.0 GHz Cortex-A53
GPU
Poco C81x
Mali-G57 MP1
Redmi S2 (Redmi Y2)
Adreno 506
Card slot
Poco C81x
microSDXC (dedicated slot)
Redmi S2 (Redmi Y2)
microSDXC (dedicated slot)
Internal
Poco C81x
64GB 3GB RAM
Redmi S2 (Redmi Y2)
32GB 3GB RAM, 64GB 4GB RAM
Other
Poco C81x
-
Redmi S2 (Redmi Y2)
eMMC 5.1
Single
Poco C81x
13 MP, f/2.2, (wide)
Redmi S2 (Redmi Y2)
-
Features
Poco C81x
LED flash, HDR
Redmi S2 (Redmi Y2)
LED flash, panorama, HDR
Video
Poco C81x
1080p@30fps
Redmi S2 (Redmi Y2)
1080p@30fps (gyro-EIS)
Dual
Poco C81x
-
Redmi S2 (Redmi Y2)
12 MP, f/2.2, 1.25μm, PDAF Auxiliary lens
Single
Poco C81x
8 MP, f/2.0, (wide)
Redmi S2 (Redmi Y2)
16 MP, f/2.5, (wide), 1/3.06" 1.0µm
Features
Poco C81x
HDR
Redmi S2 (Redmi Y2)
HDR, LED flash
Video
Poco C81x
1080p@30fps
Redmi S2 (Redmi Y2)
1080p@30fps
Loudspeaker
Poco C81x
Yes
Redmi S2 (Redmi Y2)
Yes
3.5mm jack
Poco C81x
Yes
Redmi S2 (Redmi Y2)
Yes
WLAN
Poco C81x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Redmi S2 (Redmi Y2)
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
Poco C81x
5.2, A2DP, LE
Redmi S2 (Redmi Y2)
4.2, A2DP, LE
Positioning
Poco C81x
GPS, GALILEO, GLONASS, QZSS
Redmi S2 (Redmi Y2)
NFC
Poco C81x
No
Redmi S2 (Redmi Y2)
No
Radio
Poco C81x
FM radio
Redmi S2 (Redmi Y2)
FM radio
USB
Poco C81x
USB Type-C 2.0, OTG
Redmi S2 (Redmi Y2)
microUSB 2.0
Infrared port
Poco C81x
-
Redmi S2 (Redmi Y2)
Yes
Sensors
Poco C81x
Fingerprint (side-mounted), accelerometer, compass
Redmi S2 (Redmi Y2)
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Other
Poco C81x
Virtual proximity sensing
Redmi S2 (Redmi Y2)
-
Type
Poco C81x
5200 mAh
Redmi S2 (Redmi Y2)
Li-Po 3080 mAh, non-removable
Charging
Poco C81x
15W wired 7.5W reverse wired
Redmi S2 (Redmi Y2)
10W wired
Colors
Poco C81x
Ice Blue, Crystal Black
Redmi S2 (Redmi Y2)
Gray, Gold, Rose Gold, Mesmerising Blue, Stunning Black
Price
Poco C81x
About 90 EUR
Redmi S2 (Redmi Y2)
About 160 EUR
Models
Poco C81x
-
Redmi S2 (Redmi Y2)
M1803E6G, M1803E6H, M1803E6I
SAR
Poco C81x
-
Redmi S2 (Redmi Y2)
0.43 W/kg (head) 1.58 W/kg (body)