Screen size
Mi 4s5.0"
Poco C81xWinner: 6.9"+27%
Quick verdict
Poco C81x leads the measured specs 8-5.
Measured wins
Mi 4s
5
spec wins
Ties
8
equal specs
Poco C81x
8
spec wins
Overall winner
Screen size
Technology
Mi 4s
GSM / CDMA / HSPA / LTE
Poco C81x
GSM / HSPA / LTE
2G bands
Mi 4s
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2, CDMA 800 / 1900
Poco C81x
GSM 850 / 900 / 1800 / 1900
3G bands
Mi 4s
HSDPA 850 / 1900 / 2100 , TD-SCDMA
Poco C81x
HSDPA 850 / 900 / 2100
4G bands
Mi 4s
1, 3, 7, 38, 39, 40, 41
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
equal specsStorage
equal specsMain camera
equal specsFront camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Poco C81x
1, 3, 5, 8, 28, 40, 41
Speed
Mi 4s
HSPA, LTE Cat4 150/50 Mbps
Poco C81x
HSPA, LTE
Announced
Mi 4s
2016, February. Released 2016, March
Poco C81x
2026, April 23
Status
Mi 4s
Discontinued
Poco C81x
Available. Released 2026, April 23
Dimensions
Mi 4s
139.3 x 70.8 x 7.8 mm (5.48 x 2.79 x 0.31 in)
Poco C81x
171.8 x 77.8 x 8.3 mm (6.76 x 3.06 x 0.33 in)
Weight
Mi 4s
133 g (4.69 oz)
Poco C81x
193 g (6.81 oz)
SIM
Mi 4s
Nano-SIM + Micro-SIM
Poco C81x
Nano-SIM + Nano-SIM
Other
Mi 4s
-
Poco C81x
Dust and splash resistant
Type
Mi 4s
IPS LCD
Poco C81x
IPS LCD, 120Hz, 650 nits (HBM)
Size
Mi 4s
5.0 inches, 68.9 cm2 (~69.9% screen-to-body ratio)
Poco C81x
6.88 inches, 112.4 cm2 (~84.1% screen-to-body ratio)
Resolution
Mi 4s
1080 x 1920 pixels, 16:9 ratio (~441 ppi density)
Poco C81x
720 x 1640 pixels (~260 ppi density)
OS
Mi 4s
Android 5.1 (Lollipop), upgradable to 7.0 (Nougat), MIUI 10
Poco C81x
Android 15, up to 2 major Android upgrades
Chipset
Mi 4s
Qualcomm MSM8992 Snapdragon 808 (20 nm)
Poco C81x
Unisoc T7250 (12 nm)
CPU
Mi 4s
Hexa-core (4x1.4 GHz Cortex-A53 & 2x1.8 GHz Cortex-A57)
Poco C81x
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
GPU
Mi 4s
Adreno 418
Poco C81x
Mali-G57 MP1
Card slot
Mi 4s
microSDXC (uses shared SIM slot)
Poco C81x
microSDXC (dedicated slot)
Internal
Mi 4s
64GB 3GB RAM
Poco C81x
64GB 3GB RAM
Other
Mi 4s
eMMC 5.0
Poco C81x
-
Single
Mi 4s
13 MP, f/2.0, PDAF
Poco C81x
13 MP, f/2.2, (wide)
Features
Mi 4s
Dual-LED dual-tone flash, panorama, HDR
Poco C81x
LED flash, HDR
Video
Mi 4s
1080p@30fps, 720p@120fps
Poco C81x
1080p@30fps
Single
Mi 4s
5 MP, f/2.0
Poco C81x
8 MP, f/2.0, (wide)
Video
Mi 4s
1080p@30fps
Poco C81x
1080p@30fps
Features
Mi 4s
-
Poco C81x
HDR
Loudspeaker
Mi 4s
Yes
Poco C81x
Yes
3.5mm jack
Mi 4s
Yes
Poco C81x
Yes
WLAN
Mi 4s
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Poco C81x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
Mi 4s
4.1, A2DP
Poco C81x
5.2, A2DP, LE
Positioning
Mi 4s
GPS, GLONASS, BDS
Poco C81x
GPS, GALILEO, GLONASS, QZSS
NFC
Mi 4s
No
Poco C81x
No
Infrared port
Mi 4s
Yes
Poco C81x
-
Radio
Mi 4s
No
Poco C81x
FM radio
USB
Mi 4s
USB Type-C
Poco C81x
USB Type-C 2.0, OTG
Sensors
Mi 4s
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Poco C81x
Fingerprint (side-mounted), accelerometer, compass
Other
Mi 4s
-
Poco C81x
Virtual proximity sensing
Type
Mi 4s
Li-Ion 3260 mAh, non-removable
Poco C81x
5200 mAh
Charging
Mi 4s
18W wired, QC2, 40% in 60 min
Poco C81x
15W wired 7.5W reverse wired
Colors
Mi 4s
Black, White, Gold, Pink
Poco C81x
Ice Blue, Crystal Black
Price
Mi 4s
About 220 EUR
Poco C81x
About 90 EUR