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Redmi K90 Ultra vs Xiaomi Mi 4 comparison

 Compare Redmi K90 Ultra
Redmi K90 Ultra
Compare Xiaomi Mi 4
Xiaomi Mi 4
key specs
Display6.83-inch5.00-inch
Front Camera20-megapixel8-megapixel
Rear Camera50-megapixel + 8-megapixel13-megapixel
RAM12GB3GB
Storage256GB16GB
Battery Capacity8550mAh3080mAh
OSAndroid 16Android 4.4
Resolution1280x2772 pixels1080x1920 pixels
Processor-Qualcomm Snapdragon 801
general
BrandXiaomiXiaomi
ModelRedmi K90 UltraMi 4
Release dateJune 30, 2026July 1, 2014
Launched in IndiaNoYes
Dimensions (mm)162.91 x 77.93 x 8.18139.20 x 68.50 x 8.90
Weight (g)227.00156.00
Battery capacity (mAh)85503080
Fast charging100W Fast Charging-
ColoursSpace Silver, Shadow Black and Sky BlueWhite
Form factor-Touchscreen
Removable battery-No
display
Refresh Rate165 Hz-
Resolution Standard1.5K-
Screen size (inches)6.835.00
Resolution1280x2772 pixels1080x1920 pixels
Touchscreen-Yes
Aspect ratio-16:9
hardware
Processor makeSnapdragon 8 EliteQualcomm Snapdragon 801
RAM12GB3GB
Internal storage256GB16GB
Processor-2.5GHz quad-core
Expandable storage-No
camera
Rear camera50-megapixel + 8-megapixel13-megapixel (f/1.8, 1.12-micron)
No. of Rear Cameras2-
Front camera20-megapixel8-megapixel (f/1.8)
No. of Front Cameras1-
Rear autofocus-Yes
Rear flash-LED
software
Operating systemAndroid 16Android 4.4
SkinHyperOS 3MIUI 6
connectivity
Wi-Fi 7Yes-
GPSYesYes
BluetoothYesYes, v 4.00
NFCYesNo
USB Type-CYes-
Wi-Fi-Yes
Wi-Fi standards supported-802.11 a/b/g/n/ac
Infrared-Yes
USB OTG-Yes
Micro-USB-Yes
Headphones-3.5mm
FM-Yes
Number of SIMs-1
Wi-Fi Direct-No
Mobile High-Definition Link (MHL)-No
sensors
Fingerprint sensorYes-
Compass/ MagnetometerYesYes
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes
GyroscopeYesYes
Barometer-Yes
Temperature sensor-No
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-Micro-SIM
GSM/CDMA-GSM
3G-Yes
4G/ LTE-No
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