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Redmi K90 Ultra vs Redmi 8 comparison

 Compare Redmi K90 Ultra
Redmi K90 Ultra
Compare Redmi 8
Redmi 8
key specs
Display6.83-inch6.22-inch
Front Camera20-megapixel8-megapixel
Rear Camera50-megapixel + 8-megapixel12-megapixel + 2-megapixel
RAM12GB4GB
Storage256GB64GB
Battery Capacity8550mAh5000mAh
OSAndroid 16Android 9 Pie
Resolution1280x2772 pixels720x1520 pixels
Processor-Qualcomm Snapdragon 439
general
BrandXiaomiXiaomi
ModelRedmi K90 UltraRedmi 8
Release dateJune 30, 2026October 9, 2019
Launched in IndiaNoYes
Dimensions (mm)162.91 x 77.93 x 8.18156.30 x 75.40 x 9.40
Weight (g)227.00188.00
Battery capacity (mAh)85505000
Fast charging100W Fast ChargingProprietary
ColoursSpace Silver, Shadow Black and Sky BlueSapphire Blue, Ruby Red, and Onyx Black
Form factor-Touchscreen
Removable battery-No
Wireless charging-No
display
Refresh Rate165 Hz-
Resolution Standard1.5K-
Screen size (inches)6.836.22
Resolution1280x2772 pixels720x1520 pixels
Touchscreen-Yes
Protection type-Gorilla Glass
Aspect ratio-19:9
hardware
Processor makeSnapdragon 8 EliteQualcomm Snapdragon 439
RAM12GB4GB
Internal storage256GB64GB
Processor-2GHz octa-core
Expandable storage-Yes
Expandable storage type-microSD
Expandable storage up to (GB)-512
Dedicated microSD slot-Yes
camera
Rear camera50-megapixel + 8-megapixel12-megapixel (f/1.8) + 2-megapixel
No. of Rear Cameras2-
Front camera20-megapixel8-megapixel
No. of Front Cameras1-
Rear autofocus-Yes
Rear flash-Yes
Front autofocus-No
Front flash-No
software
Operating systemAndroid 16Android 9 Pie
SkinHyperOS 3MIUI 10
connectivity
Wi-Fi 7Yes-
GPSYesYes
BluetoothYesYes, v 4.20
NFCYes-
USB Type-CYesYes
Wi-Fi-Yes
Wi-Fi standards supported-802.11 b/g/n
Headphones-3.5mm
FM-Yes
Number of SIMs-2
Active 4G on both SIM cards-Yes
sensors
Fingerprint sensorYesYes
Compass/ MagnetometerYesYes
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes
GyroscopeYes-
Face unlock-Yes
ratings
Overall NDTV Rating-Read Review
Design Rating-
Display Rating-
Software Rating-
Performance Rating-
Battery Life Rating-
Camera Rating-
Value for Money Rating-
sim 1
SIM Type-Nano-SIM
GSM/CDMA-GSM
3G-Yes
4G/ LTE-Yes
sim 2
SIM Type-Nano-SIM
GSM/CDMA-GSM
3G-Yes
4G/ LTE-Yes
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