Microsoft Lumia 840 vs Microsoft Lumia 640 Dual SIM vs Microsoft Lumia 940

BASIC INFO
Model No Lumia 840 - -
Status Available Available. Released 2015, April release 2015, Q2
Release Date 2015, April, Q3 2015, March 2015, April
Dimension 137mm x 71mm x 8.9mm 141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) 157 x 71 x 8.9mm
Weight 146 g 145 g (5.11 oz) 149 g (5.26 oz)
Colors Yellow, white, black, red Glossy cyan, Orange, White, Matte black Yellow, white, black, red
Body Metrial - - -
W & D Proof - - -
SIM Type Micro sim, Dual Sim - -
Technology GSM - -
OS Microsoft Windows Phone 8.1 Microsoft Windows Phone 8.1, planned upgrade to Windows 10 Microsoft Windows Phone 10
PROSESSING
Processor Quad-core, 2.7 Ghz Krait 400 Qualcomm Snapdragon 400, Quad core 1.2 GHz cortex a7 Adreno 305 GPU Dual-core 1.82 GHz Cortex-A57 & quad-core 1.44 GHz Cortex-A53, Qualcomm MSM8992 Snapdragon 808, Adre
Chipset Qualcomm Snapdragon 400 - -
GPU Adreno420 - -
MEMORY
RAM 2 GB - -
Storage 16 GB - -
Card Slot microSD, up to 128 GB 8 GB Storage, 1 GB RAM, microSD, up to 32 GB card slot 32 GB Storage, 3 GB RAM, microSD, up to 128 GB card slot
DISPLAY
Size 5.0 inches 720 x 1280 pixels, 5 inches (~229 ppi pixel density) 1440 x 2560 pixels, 5.2 inches
Type Super Amoled capacitive touchscreen, 16M colors IPS LCD capacitive touchscreen, 16M colors Super Amoled capacitive touchscreen, 16M colors
Resolation 1080 x 1920 pixels - -
PPI 441 ppi pixel density - -
Multi touch Yes - -
Protection Corning Gorilla Glass - -
CAMERA
Primary 14 MP, 3456 x 4608 pixels, optical image stabilization, autofocus, triple-LED flash, Geo-tagging, touch focus, face detection, panorama, HDR 8 MP, 3264 x 2448 pixels, autofocus, LED flash 24 MP, 5248 x 3936 pixels, autofocus, LED flash
Video Yes, 1080p@30fps Yes, 1080p@30fps Yes, 720p@30fps
Flash LED - -
Features Yes - -
Selfie Yes 5 MP Yes, 1 MP Yes 5 MP
BATTERY
Battery Li-Ion Battry Li-Ion 2500 mAh battery Non-removable 3000 mAh battery
Capacity 3000 mah - -
Removable Non-Removable - -
StandBy - - -
Talk Time - - -
Music Play - - -
Browsing Yes - -
Video Playback - - -
F Charging - - -
W Charging - - -
NETWORK
2G Network GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G Network LTE - LTE
Speed Yes - -
5G - - -
CONECTIVY
WALAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi hotspot
BlueTooth Yes, v4.0 with A2DP Yes, v4.0 with A2DP Yes, v4.0 with A2DP
USB Yes, microUSB v2.0 Yes, microUSB v2.0 Yes, microUSB v2.0
GPS Yes, with A-GPS support and GLONASS Yes, with A-GPS, GLONASS, Beidou Yes, with A-GPS support and GLONASS
NFC Yes - -
Audio jeck Yes - -
OTHERS
Sensors Accelerometer, Ambient Light - -
Radio FM radio FM radio FM radio
SARUS - - -
SAREU - - -
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