Samsung Galaxy J1 Ace vs Samsung Galaxy J2 vs Microsoft Lumia 640 Dual SIM comparison

Compare Samsung Galaxy J1 Ace
Compare Samsung Galaxy J2
Compare Microsoft Lumia 640 Dual SIM
key specs
Display4.30-inch4.70-inch5.00-inch
Processor1.3GHz dual-coreSamsung Exynos 3475Qualcomm Snapdragon 400
Front Camera2-megapixel2-megapixel 0.9-megapixel
Rear Camera5-megapixel5-megapixel 8-megapixel
RAM512MB1GB1GB
Storage4GB8GB8GB
Battery Capacity1800mAh2000mAh2500mAh
OSAndroid 4.4Android 5.1Windows Phone 8.1
Resolution480x800 pixels540x960 pixels720x1280 pixels
general
Alternate namesSM-J110HZKD--
BrandSamsungSamsungMicrosoft
ModelGalaxy J1 AceGalaxy J2Lumia 640 Dual SIM
Release dateSeptember 1, 2015September 1, 2015February 1, 2015
Dimensions (mm)130.10 x 67.60 x 9.50136.50 x 69.00 x 8.40141.30 x 72.20 x 8.80
Battery capacity (mAh)180020002500
Removable batteryYesYesYes
Launched in India-Yes-
Form factor-TouchscreenTouchscreen
Colours-Black, White, Gold-
Weight (g)--145.00
display
Screen size (inches)4.304.705.00
TouchscreenYesYesYes
Resolution480x800 pixels540x960 pixels720x1280 pixels
Aspect ratio-16:9-
Pixels per inch (PPI)-234294
hardware
Processor1.3GHz dual-core1.3GHz quad-core1.2GHz quad-core
RAM512MB1GB1GB
Internal storage4GB8GB8GB
Expandable storageYesYesYes
Expandable storage typemicroSDmicroSDmicroSD
Expandable storage up to (GB)128128128
Processor make-Samsung Exynos 3475Qualcomm Snapdragon 400
camera
Rear camera5-megapixel5-megapixel (f/2.2)8-megapixel
Rear flashLEDLEDLED
Front camera2-megapixel2-megapixel (f/2.2)0.9-megapixel
Rear autofocus-Yes-
software
Operating systemAndroid 4.4Android 5.1Windows Phone 8.1
connectivity
Wi-FiYesYesYes
GPSYesYesYes
BluetoothYesYes, v 4.10Yes
NFCNoNoNo
InfraredNoNoNo
USB OTGNoYesNo
Headphones3.5mm3.5mm3.5mm
FMYesYesYes
Number of SIMs222
Wi-Fi DirectNoYesNo
Mobile High-Definition Link (MHL)NoNoNo
Wi-Fi standards supported-802.11 b/g/n802.11 b/g/n
sim 1
SIM TypeMicro-SIMMicro-SIMMicro-SIM
GSM/CDMAGSMGSMGSM
3GYesYesYes
4G/ LTENoYesNo
sim 2
SIM TypeMicro-SIMMicro-SIMMicro-SIM
GSM/CDMAGSMGSMGSM
3GNoNoYes
4G/ LTENoNoNo
sensors
Compass/ MagnetometerNoNoYes
Proximity sensorYesYesYes
AccelerometerYesYesYes
Ambient light sensorYesNoYes
GyroscopeYesNoNo
BarometerNoNoNo
Temperature sensorNoNoNo

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