Screen size
Mi 4 LTE5.0"
Poco C81xWinner: 6.9"+27%
Quick verdict
Poco C81x leads the measured specs 9-5.
Measured wins
Mi 4 LTE
5
spec wins
Ties
7
equal specs
Poco C81x
9
spec wins
Overall winner
Screen size
Technology
Mi 4 LTE
GSM / HSPA / LTE
Poco C81x
GSM / HSPA / LTE
2G bands
Mi 4 LTE
GSM 850 / 900 / 1800 / 1900
Poco C81x
GSM 850 / 900 / 1800 / 1900
3G bands
Mi 4 LTE
HSDPA 850 / 900 / 1900 / 2100
Poco C81x
HSDPA 850 / 900 / 2100
4G bands
Mi 4 LTE
LTE - international model
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
equal specsStorage
Main camera
equal specsFront camera
equal specsBattery
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 C81x
1, 3, 5, 8, 28, 40, 41
Speed
Mi 4 LTE
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Poco C81x
HSPA, LTE
Announced
Mi 4 LTE
2014, December. Released 2014, December
Poco C81x
2026, April 23
Status
Mi 4 LTE
Discontinued
Poco C81x
Available. Released 2026, April 23
Dimensions
Mi 4 LTE
139.2 x 68.5 x 8.9 mm (5.48 x 2.70 x 0.35 in)
Poco C81x
171.8 x 77.8 x 8.3 mm (6.76 x 3.06 x 0.33 in)
Weight
Mi 4 LTE
149 g (5.26 oz)
Poco C81x
193 g (6.81 oz)
SIM
Mi 4 LTE
Micro-SIM
Poco C81x
Nano-SIM + Nano-SIM
Other
Mi 4 LTE
-
Poco C81x
Dust and splash resistant
Type
Mi 4 LTE
IPS LCD
Poco C81x
IPS LCD, 120Hz, 650 nits (HBM)
Size
Mi 4 LTE
5.0 inches, 68.9 cm2 (~72.3% screen-to-body ratio)
Poco C81x
6.88 inches, 112.4 cm2 (~84.1% screen-to-body ratio)
Resolution
Mi 4 LTE
1080 x 1920 pixels, 16:9 ratio (~441 ppi density)
Poco C81x
720 x 1640 pixels (~260 ppi density)
OS
Mi 4 LTE
Android 4.4.3 (KitKat), MIUI 5
Poco C81x
Android 15, up to 2 major Android upgrades
Chipset
Mi 4 LTE
Qualcomm MSM8974AC Snapdragon 801 (28 nm)
Poco C81x
Unisoc T7250 (12 nm)
CPU
Mi 4 LTE
Quad-core 2.5 GHz Krait 400
Poco C81x
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
GPU
Mi 4 LTE
Adreno 330
Poco C81x
Mali-G57 MP1
Card slot
Mi 4 LTE
No
Poco C81x
microSDXC (dedicated slot)
Internal
Mi 4 LTE
16GB 3GB RAM
Poco C81x
64GB 3GB RAM
Other
Mi 4 LTE
eMMC 5.0
Poco C81x
-
Single
Mi 4 LTE
13 MP, f/1.8, 1/3.1", 1.12µm, AF
Poco C81x
13 MP, f/2.2, (wide)
Features
Mi 4 LTE
LED flash, panorama, HDR
Poco C81x
LED flash, HDR
Video
Mi 4 LTE
4K@30fps, 1080p@30fps, 720p@120fps, HDR
Poco C81x
1080p@30fps
Single
Mi 4 LTE
8 MP, f/1.8
Poco C81x
8 MP, f/2.0, (wide)
Video
Mi 4 LTE
1080p@30fps
Poco C81x
1080p@30fps
Features
Mi 4 LTE
-
Poco C81x
HDR
Loudspeaker
Mi 4 LTE
Yes
Poco C81x
Yes
3.5mm jack
Mi 4 LTE
Yes
Poco C81x
Yes
WLAN
Mi 4 LTE
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot
Poco C81x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
Mi 4 LTE
4.0, A2DP
Poco C81x
5.2, A2DP, LE
Positioning
Mi 4 LTE
GPS, GLONASS, BDS
Poco C81x
GPS, GALILEO, GLONASS, QZSS
NFC
Mi 4 LTE
No
Poco C81x
No
Infrared port
Mi 4 LTE
Yes
Poco C81x
-
Radio
Mi 4 LTE
FM radio
Poco C81x
FM radio
USB
Mi 4 LTE
microUSB 2.0, OTG
Poco C81x
USB Type-C 2.0, OTG
Sensors
Mi 4 LTE
Accelerometer, gyro, proximity, compass, barometer
Poco C81x
Fingerprint (side-mounted), accelerometer, compass
Other
Mi 4 LTE
-
Poco C81x
Virtual proximity sensing
Type
Mi 4 LTE
Li-Ion 3080 mAh, non-removable
Poco C81x
5200 mAh
Charging
Mi 4 LTE
18W wired, QC2
Poco C81x
15W wired 7.5W reverse wired
Colors
Mi 4 LTE
White
Poco C81x
Ice Blue, Crystal Black
Price
Mi 4 LTE
About 230 EUR
Poco C81x
About 90 EUR