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microsoft lumia 640 dual sim
microsoft lumia 550

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Brand
 microsoft microsoft
Model
 microsoft lumia 640 dual sim microsoft lumia 550
Announced
 2015 March. Released 2015 April 2015 October. Released 2015 December
Status
 discontinued discontinued
Device Body
Dimensions
 141.3 x 72.2 x 8.8 mm ( 5.56 x 2.84 x 0.35 in ) 136.1 x 67.8 x 9.9 mm ( 5.36 x 2.67 x 0.39 in )
Weight in gram
 145
SIM card
 dual SIM ( Micro-SIM | dual stand-by ) Nano-SIM
Water Resistance
 No No
Display type
 IPS LCD IPS LCD |
Display resolution
 720 x 1280 pixels | 16 : 9 ratio ( ~294 pixel per inch density ) 720 x 1280 pixels | 16 : 9 ratio ( ~315 pixel per inch density )
Display size
 5.0 inches | 68.9 cm2 ( ~67.6% screen to body ratio ) 4.7 inches | 59.7 cm2 ( ~64.7% screen to body ratio )
Display Protection
 corning gorilla glass 3
Operating System
 microsoft windows phone 8.1 | upgradable to microsoft windows 10 microsoft windows 10
CPU
 Quad-core 1.2 GHz cortex-a7 Quad-core 1.1 GHz cortex-a7
Chipset
 Qualcomm msm8926 snapdragon 400 ( 28 nm ) Qualcomm msm8909 snapdragon 210 ( 28 nm )
GPU
 adreno 305 adreno 304
Memory card
 microsdxc ( dedicated slot ) microsdxc ( dedicated slot )
Memory v1
 8gb 1gb RAM 8gb 1gb RAM
Memory v2
Primary camera
8 megapixel| lens aperture2.2 | 28mm ( wide ) | 1/4.0" | Auto focus
5 megapixel| lens aperture2.4 | 1/4.0" | Auto focus
Secondary camera
1 mega pixel
2 megapixel| lens aperture2.8
Loud speaker
 Yes Yes
Audio jack
 Yes Yes
WLAN
 Wi-Fi 802.11 b/g/n | dlna | hotspot Wi-Fi 802.11 b/g/n | hotspot
Bluetooth
 4.0 | a2dp 4.1.0 | a2dp
GPS
NFC
 No No
Radio
 FM Radio FM Radio
USB
 microusb 2.0 microusb 2.0
Sensors
 accelerometer | proximity | compass accelerometer | proximity
Battery
 Li-lon 2500 mAh | removable Li-lon 2100 mAh | removable
Battery Charge
Colors
 cyan color gradations, orange, white, black black, white
Network technology
 gsm / hspa gsm / hspa / lte
5G bands
Network speed
 hspa 42.2/5.76 mbps hspa 42.2/5.76 mbps lte cat4 150/50 mbps
GPRS
EDGE
Approx price
  • 150 GBP
  • 177 EUR
  • 1680 NOK
  • 1800 SEK
  • 10900 RUB
  • 180 USD
  • 920 BRL
  • 250 AUD
  • 230000 KRW
  • 24000 JPY
  • 240 SGD
  • 770 MYR
  • 640 AED
  • 2900 ZAR
  • 80 GBP
  • 100 EUR
  • 890 NOK
  • 1000 SEK
  • 5800 RUB
  • 100 USD
  • 490 BRL
  • 140 AUD
  • 120000 KRW
  • 13000 JPY
  • 130 SGD
  • 410 MYR
  • 340 AED
  • 1600 ZAR