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Redmi K90 Ultra vs Xiaomi Redmi Note 9 4G comparison

 Compare Redmi K90 Ultra
Redmi K90 Ultra
Compare Xiaomi Redmi Note 9 4G
Xiaomi Redmi Note 9 4G
key specs
Display6.83-inch6.53-inch
Front Camera20-megapixel8-megapixel
Rear Camera50-megapixel + 8-megapixel48-megapixel + 8-megapixel + 2-megapixel
RAM12GB4GB
Storage256GB128GB
Battery Capacity8550mAh6000mAh
OSAndroid 16Android 10
Resolution1280x2772 pixels1080x2340 pixels
general
BrandXiaomiXiaomi
ModelRedmi K90 UltraRedmi Note 9 4G
Release dateJune 30, 2026November 26, 2020
Launched in IndiaNoNo
Dimensions (mm)162.91 x 77.93 x 8.18162.30 x 77.20 x 9.60
Weight (g)227.00198.00
Battery capacity (mAh)85506000
Fast charging100W Fast ChargingProprietary
ColoursSpace Silver, Shadow Black and Sky BlueSmoke Wave Blue, Misty Green, and Feather Black
Form factor-Touchscreen
display
Refresh Rate165 Hz-
Resolution Standard1.5K-
Screen size (inches)6.836.53
Resolution1280x2772 pixels1080x2340 pixels
Touchscreen-Yes
Aspect ratio-19.5:9
hardware
Processor makeSnapdragon 8 EliteQualcomm Snapdragon 662
RAM12GB4GB
Internal storage256GB128GB
Expandable storage-Yes
Expandable storage type-microSD
Expandable storage up to (GB)-512
Dedicated microSD slot-Yes
camera
Rear camera50-megapixel + 8-megapixel48-megapixel (f/1.79) + 8-megapixel (f/2.2) + 2-megapixel (f/2.4)
No. of Rear Cameras2-
Front camera20-megapixel8-megapixel (f/2.0)
No. of Front Cameras1-
Rear flash-Yes
software
Operating systemAndroid 16Android 10
SkinHyperOS 3MIUI 12
connectivity
Wi-Fi 7Yes-
GPSYesYes
BluetoothYesYes, v 4.20
NFCYes-
USB Type-CYesYes
Wi-Fi-Yes
Wi-Fi standards supported-802.11 a/b/g/n
Infrared-Yes
Headphones-3.5mm
FM-Yes
Number of SIMs-2
Wi-Fi Direct-Yes
sensors
Fingerprint sensorYesYes
Compass/ MagnetometerYes-
Proximity sensorYes-
AccelerometerYesYes
Ambient light sensorYesYes
GyroscopeYes-
Face unlock-Yes
sim 1
SIM Type-Nano-SIM
3G-Yes
4G/ LTE-Yes
sim 2
SIM Type-Nano-SIM
3G-Yes
4G/ LTE-Yes
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