Screen size
Mi 4i5.0"
Poco C81Winner: 6.9"+28%
Quick verdict
Poco C81 leads the measured specs 12-4.
Measured wins
Mi 4i
4
spec wins
Ties
5
equal specs
Poco C81
12
spec wins
Overall winner
Screen size
Technology
Mi 4i
GSM / HSPA / LTE
Poco C81
GSM / HSPA / LTE
2G bands
Mi 4i
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Poco C81
GSM 900 / 1800 / 1900
3G bands
Mi 4i
HSDPA 850 / 1900 / 2100 , TD-SCDMA
Poco C81
HSDPA 850 / 900 / 2100
4G bands
Mi 4i
3, 7, 38, 39, 40, 41
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
equal specsFront camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
Stereo speakers
Poco C81
LTE
Speed
Mi 4i
HSPA, LTE Cat4 150/50 Mbps
Poco C81
HSPA, LTE
Announced
Mi 4i
2015, April. Released 2015, April
Poco C81
2026, April 23
Status
Mi 4i
Discontinued
Poco C81
Available. Released 2026, April 23
Dimensions
Mi 4i
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in)
Poco C81
171.6 x 79.5 x 8.2 mm (6.76 x 3.13 x 0.32 in)
Weight
Mi 4i
130 g (4.59 oz)
Poco C81
208 g (7.34 oz)
Build
Mi 4i
Glass front (Gorilla Glass), plastic back, plastic frame
Poco C81
Glass front, plastic frame, plastic back
SIM
Mi 4i
Dual SIM (Micro-SIM, dual stand-by)
Poco C81
Nano-SIM + Nano-SIM
Other
Mi 4i
-
Poco C81
Dust and splash resistant
Type
Mi 4i
IPS LCD
Poco C81
IPS LCD, 120Hz, 800 nits (peak)
Size
Mi 4i
5.0 inches, 68.9 cm2 (~71.7% screen-to-body ratio)
Poco C81
6.9 inches, 114.9 cm2 (~84.3% screen-to-body ratio)
Resolution
Mi 4i
1080 x 1920 pixels, 16:9 ratio (~441 ppi density)
Poco C81
720 x 1600 pixels, 20:9 ratio (~254 ppi density)
Protection
Mi 4i
Corning scratch-resistant glass
Poco C81
-
OS
Mi 4i
Android 5.0.2 (Lollipop), MIUI 8.2
Poco C81
Android 16, up to 4 major Android upgrades, HyperOS 3
Chipset
Mi 4i
Qualcomm MSM8939 Snapdragon 615 (28 nm)
Poco C81
Unisoc T7250 (12 nm)
CPU
Mi 4i
Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
Poco C81
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
GPU
Mi 4i
Adreno 405
Poco C81
Mali-G57 MP1
Card slot
Mi 4i
No
Poco C81
microSDXC (dedicated slot)
Internal
Mi 4i
16GB 2GB RAM, 32GB 2GB RAM
Poco C81
64GB 4GB RAM
Other
Mi 4i
eMMC 4.5
Poco C81
-
Single
Mi 4i
13 MP, f/2.0, AF
Poco C81
13 MP, (wide)
Features
Mi 4i
Dual-LED dual-tone flash, panorama, HDR
Poco C81
LED flash
Video
Mi 4i
1080p@30fps, 480p@120fps
Poco C81
1080p@30fps
Single
Mi 4i
5 MP, f/1.8
Poco C81
8 MP, (wide)
Video
Mi 4i
Poco C81
1080p@30fps
Features
Mi 4i
-
Poco C81
HDR
Loudspeaker
Mi 4i
Yes
Poco C81
Yes
3.5mm jack
Mi 4i
Yes
Poco C81
Yes
WLAN
Mi 4i
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Poco C81
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
Mi 4i
4.1, A2DP
Poco C81
5.2, A2DP, LE
Positioning
Mi 4i
GPS, GLONASS, BDS
Poco C81
GPS, GALILEO, GLONASS, BDS
NFC
Mi 4i
No
Poco C81
No
Radio
Mi 4i
Stereo FM radio
Poco C81
FM radio
USB
Mi 4i
microUSB 2.0, OTG
Poco C81
USB Type-C 2.0
Sensors
Mi 4i
Accelerometer, gyro, proximity, compass
Poco C81
Fingerprint (side-mounted), accelerometer, compass
Other
Mi 4i
-
Poco C81
Virtual proximity sensing
Type
Mi 4i
Li-Ion 3120 mAh, non-removable
Poco C81
6300 mAh
Charging
Mi 4i
10W wired, QC1
Poco C81
15W wired 7.5W reverse wired
Talk time
Mi 4i
Up to 35 h (3G)
Poco C81
-
Colors
Mi 4i
Dark Gray, Black, White, Yellow, Blue, Pink
Poco C81
Sky Blue, Elite Black, Sunset Gold
Models
Mi 4i
2015015
Poco C81
-
SAR
Mi 4i
0.51 W/kg (head) 0.60 W/kg (body)
Poco C81
-
Price
Mi 4i
About 260 EUR
Poco C81
About 100 EUR