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Redmi 9i vs Microsoft Lumia 640 Dual SIM
Redmi 9i
vs
Microsoft Lumia 640 Dual SIM
comparison
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Redmi 9i
Microsoft Lumia 640 Dual SIM
key specs
Display
6.53-inch
5.00-inch
Processor
MediaTek Helio G25
Qualcomm Snapdragon 400
Front Camera
5-megapixel
0.9-megapixel
Rear Camera
13-megapixel
8-megapixel
RAM
4GB
1GB
Storage
64GB
8GB
Battery Capacity
5000mAh
2500mAh
OS
Android 10
Windows Phone 8.1
Resolution
720x1600 pixels
720x1280 pixels
general
Brand
Xiaomi
Microsoft
Model
Redmi 9i
Lumia 640 Dual SIM
Release date
September 15, 2020
February 1, 2015
Launched in India
Yes
-
Form factor
Touchscreen
Touchscreen
Dimensions (mm)
164.90 x 77.07 x 9.00
141.30 x 72.20 x 8.80
Weight (g)
194.00
145.00
Battery capacity (mAh)
5000
2500
Removable battery
No
Yes
Fast charging
Proprietary
-
Colours
Midnight Black, Sea Blue, Nature Green
-
display
Screen size (inches)
6.53
5.00
Touchscreen
Yes
Yes
Resolution
720x1600 pixels
720x1280 pixels
Aspect ratio
20:9
-
Pixels per inch (PPI)
-
294
hardware
Processor
1.5GHz octa-core (4x1.5GHz + 4x2GHz)
1.2GHz quad-core
Processor make
MediaTek Helio G25
Qualcomm Snapdragon 400
RAM
4GB
1GB
Internal storage
64GB
8GB
Expandable storage
Yes
Yes
Expandable storage type
microSD
microSD
Expandable storage up to (GB)
512
128
Dedicated microSD slot
Yes
-
camera
Rear camera
13-megapixel (f/2.2, 1.0-micron)
8-megapixel
Rear autofocus
Yes
-
Rear flash
Yes
LED
Front camera
5-megapixel
0.9-megapixel
software
Operating system
Android 10
Windows Phone 8.1
Skin
MIUI
-
connectivity
Wi-Fi
Yes
Yes
Wi-Fi standards supported
802.11 a/b/g/n
802.11 b/g/n
GPS
Yes
Yes
Bluetooth
Yes, v 5.00
Yes
Micro-USB
Yes
-
Number of SIMs
2
2
NFC
-
No
Infrared
-
No
USB OTG
-
No
Headphones
-
3.5mm
FM
-
Yes
Wi-Fi Direct
-
No
Mobile High-Definition Link (MHL)
-
No
sim 1
SIM Type
Nano-SIM
Micro-SIM
GSM/CDMA
GSM
GSM
3G
Yes
Yes
4G/ LTE
Yes
No
sim 2
SIM Type
Nano-SIM
Micro-SIM
GSM/CDMA
GSM
GSM
3G
Yes
Yes
4G/ LTE
Yes
No
sensors
Face unlock
Yes
-
Compass/ Magnetometer
Yes
Yes
Proximity sensor
Yes
Yes
Accelerometer
Yes
Yes
Ambient light sensor
Yes
Yes
Gyroscope
-
No
Barometer
-
No
Temperature sensor
-
No
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