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Redmi A4 5G vs Microsoft Lumia 640 Dual SIM comparison

 Compare Redmi A4 5G
Redmi A4 5G
Compare Microsoft Lumia 640 Dual SIM
Microsoft Lumia 640 Dual SIM
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
RAM4GB1GB
Storage64GB8GB
Battery Capacity5160mAh2500mAh
OSAndroid 14Windows Phone 8.1
Resolution720x1640 pixels720x1280 pixels
general
BrandRedmiMicrosoft
ModelA4 5GLumia 640 Dual SIM
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
RAM4GB1GB
Internal storage64GB8GB
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 SIMs22
Active 4G on both SIM cardsYes-
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 TypeNano-SIMMicro-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesNo
5GYes-
sim 2
SIM TypeNano-SIMMicro-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesNo
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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