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Redmi A4 5G vs Microsoft Lumia 640 comparison

 Compare Redmi A4 5G
Redmi A4 5G
Compare Microsoft Lumia 640
Microsoft Lumia 640
ratings
Overall NDTV RatingRead Review-
Design Rating-
Display Rating-
Software Rating-
Performance Rating-
Battery Life Rating-
Camera Rating-
Value for Money Rating-
key specs
Display6.88-inch5.00-inch
ProcessorQualcomm Snapdragon 4s Gen 2Qualcomm Snapdragon 400
Front Camera5-megapixel 0.9-megapixel
Rear Camera50-megapixel + Unspecified8-megapixel
RAM4GB, 6GB1GB
Storage64GB, 128GB8GB
Battery Capacity5160mAh2500mAh
OSAndroid 14Windows Phone 8.1
Resolution720x1640 pixels720x1280 pixels
general
BrandRedmiMicrosoft
ModelA4 5GLumia 640
Release dateNovember 20, 2024February 1, 2015
Launched in IndiaYes-
Dimensions (mm)171.88 x 77.80 x 8.22141.30 x 72.20 x 8.80
Weight (g)212.35145.00
IP ratingIP52-
Battery capacity (mAh)51602500
Removable batteryNoYes
Wireless chargingNo-
ColoursSparkling Purple, Starry Bllack-
Form factor-Touchscreen
display
Refresh Rate120 Hz-
Resolution StandardHD+-
Screen size (inches)6.885.00
TouchscreenYesYes
Resolution720x1640 pixels720x1280 pixels
Pixels per inch (PPI)-294
hardware
Processorocta-core1.2GHz quad-core
Processor makeQualcomm Snapdragon 4s Gen 2Qualcomm Snapdragon 400
RAM4GB, 6GB1GB
Internal storage64GB, 128GB8GB
Expandable storageYesYes
Expandable storage typemicroSDmicroSD
Expandable storage up to (GB)1-24128
Dedicated microSD slotYes-
camera
Rear camera50-megapixel (f/1.8) + Unspecified8-megapixel
No. of Rear Cameras2-
Front camera5-megapixel (f/2.2)0.9-megapixel
No. of Front Cameras1-
Rear flash-LED
software
Operating systemAndroid 14Windows Phone 8.1
SkinHyperOS-
connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 a/b/g/n/ac802.11 b/g/n
GPSYesYes
BluetoothYes, v 5.00Yes
USB Type-CYes-
Number of SIMs21
Active 4G on both SIM cardsYes-
NFC-No
Infrared-No
USB OTG-No
Headphones-3.5mm
FM-No
Wi-Fi Direct-No
Mobile High-Definition Link (MHL)-No
sim 1
SIM TypeNano-SIMMicro-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesNo
5GYes-
sim 2
SIM TypeNano-SIM-
GSM/CDMAGSM-
3GYes-
4G/ LTEYes-
5GYes-
sensors
Compass/ Magnetometer-Yes
Proximity sensor-Yes
Accelerometer-Yes
Ambient light sensor-Yes
Gyroscope-No
Barometer-No
Temperature sensor-No

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