Screen size
Poco C81xWinner: 6.9"+5.1%
Redmi 9 Activ6.5"
Quick verdict
Poco C81x leads the measured specs 10-3.
Measured wins
Poco C81x
10
spec wins
Overall winner
Ties
8
equal specs
Redmi 9 Activ
3
spec wins
Screen size
Technology
Poco C81x
GSM / HSPA / LTE
Redmi 9 Activ
GSM / HSPA / LTE
2G bands
Poco C81x
GSM 850 / 900 / 1800 / 1900
Redmi 9 Activ
GSM 850 / 900 / 1800 / 1900
3G bands
Poco C81x
HSDPA 850 / 900 / 2100
Redmi 9 Activ
HSDPA 850 / 900 / 2100
4G bands
Poco C81x
1, 3, 5, 8, 28, 40, 41
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
equal specsMain camera
equal specsFront 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
Redmi 9 Activ
1, 3, 5, 8, 40, 41
Speed
Poco C81x
HSPA, LTE
Redmi 9 Activ
HSPA, LTE
Announced
Poco C81x
2026, April 23
Redmi 9 Activ
2021, September 24
Status
Poco C81x
Available. Released 2026, April 23
Redmi 9 Activ
Available. Released 2021, September 24
Dimensions
Poco C81x
171.8 x 77.8 x 8.3 mm (6.76 x 3.06 x 0.33 in)
Redmi 9 Activ
164.9 x 77.1 x 9 mm (6.49 x 3.04 x 0.35 in)
Weight
Poco C81x
193 g (6.81 oz)
Redmi 9 Activ
194 g (6.84 oz)
SIM
Poco C81x
Nano-SIM + Nano-SIM
Redmi 9 Activ
Nano-SIM + Nano-SIM
Other
Poco C81x
Dust and splash resistant
Redmi 9 Activ
Water-repellent coating
Type
Poco C81x
IPS LCD, 120Hz, 650 nits (HBM)
Redmi 9 Activ
IPS LCD, 400 nits (typ)
Size
Poco C81x
6.88 inches, 112.4 cm2 (~84.1% screen-to-body ratio)
Redmi 9 Activ
6.53 inches, 102.9 cm2 (~81.0% screen-to-body ratio)
Resolution
Poco C81x
720 x 1640 pixels (~260 ppi density)
Redmi 9 Activ
720 x 1600 pixels, 20:9 ratio (~269 ppi density)
OS
Poco C81x
Android 15, up to 2 major Android upgrades
Redmi 9 Activ
Android 10, MIUI 12
Chipset
Poco C81x
Unisoc T7250 (12 nm)
Redmi 9 Activ
Mediatek MT6765G Helio G35 (12 nm)
CPU
Poco C81x
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
Redmi 9 Activ
Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
GPU
Poco C81x
Mali-G57 MP1
Redmi 9 Activ
PowerVR GE8320
Card slot
Poco C81x
microSDXC (dedicated slot)
Redmi 9 Activ
microSDXC (dedicated slot)
Internal
Poco C81x
64GB 3GB RAM
Redmi 9 Activ
64GB 4GB RAM, 128GB 6GB RAM
Other
Poco C81x
-
Redmi 9 Activ
eMMC 5.1
Single
Poco C81x
13 MP, f/2.2, (wide)
Redmi 9 Activ
-
Features
Poco C81x
LED flash, HDR
Redmi 9 Activ
LED flash, HDR
Video
Poco C81x
1080p@30fps
Redmi 9 Activ
1080p@30fps
Dual
Poco C81x
-
Redmi 9 Activ
13 MP, f/2.2, (wide), PDAF Auxiliary lens
Single
Poco C81x
8 MP, f/2.0, (wide)
Redmi 9 Activ
5 MP, f/2.2, (wide), 1.12µm
Features
Poco C81x
HDR
Redmi 9 Activ
HDR
Video
Poco C81x
1080p@30fps
Redmi 9 Activ
1080p@30fps
Loudspeaker
Poco C81x
Yes
Redmi 9 Activ
Yes
3.5mm jack
Poco C81x
Yes
Redmi 9 Activ
Yes
WLAN
Poco C81x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Redmi 9 Activ
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
Poco C81x
5.2, A2DP, LE
Redmi 9 Activ
5.0, A2DP, LE
Positioning
Poco C81x
GPS, GALILEO, GLONASS, QZSS
Redmi 9 Activ
GPS, GLONASS, BDS
NFC
Poco C81x
No
Redmi 9 Activ
No
Radio
Poco C81x
FM radio
Redmi 9 Activ
FM radio
USB
Poco C81x
USB Type-C 2.0, OTG
Redmi 9 Activ
microUSB 2.0, OTG
Sensors
Poco C81x
Fingerprint (side-mounted), accelerometer, compass
Redmi 9 Activ
Fingerprint (rear-mounted), accelerometer, proximity
Other
Poco C81x
Virtual proximity sensing
Redmi 9 Activ
-
Type
Poco C81x
5200 mAh
Redmi 9 Activ
Li-Po 5000 mAh
Charging
Poco C81x
15W wired 7.5W reverse wired
Redmi 9 Activ
10W wired
Colors
Poco C81x
Ice Blue, Crystal Black
Redmi 9 Activ
Carbon Black, Coral Green, Metallic Purple
Price
Poco C81x
About 90 EUR
Redmi 9 Activ
About 110 EUR
SAR
Poco C81x
-
Redmi 9 Activ
0.51 W/kg (head) 0.83 W/kg (body)