Dual SIM 4G Microsoft Lumia 640, BLACK A00025748 LTE Windows Phone 8.1

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Loaded with all the power you need,the Lumia 640 LTE Dual SIM works as fast and efficiently as you do. It's a workhorse that lets you concentrate more on what you're doing at any moment. And you'll have plenty of juice to help you achieve more with the whopping 2500 mAh battery. 

Key Features •
 Latest version of Windows Phone 8.1 along with seamlessly integrated Microsoft Office experiences • Built-in Skype integration and a 1MP front-facing camera for switching seamlessly between voice and video calls • 8MP camera with LED flash and Lumia Camera right out of the box • 1GB of memory and powerful quad core processor • Best of both worlds with LTE support available on dual SIM models for the first time


Power-infused performance 
Capture your world with clarity 
Accessible at any time 
Product Features

Power-infused performance 
Loaded with all the power you need,the Lumia 640 LTE Dual SIM works as fast and efficiently as you do. It's a workhorse that lets you concentrate more on what you're doing at any moment. And you'll have plenty of juice to help you achieve more with the whopping 2500 mAh battery. 

Capture your world with clarity 
Want to relive your favorite moments? Capture all of them with superb quality and ease using the Lumia Camera app and 8 MP rear camera. And with the wide-angle,front-facing camera,let your family and friends see more of your surroundings clearly in your free HD Skype video calls. 

Accessible at any time 
Easily manage your mobile costs and be reachable to all your friends and colleagues with Smart Dual SIM,allowing you to enable call waiting and call forwarding between two SIM cards. 

Main Specifications
Product DescriptionMicrosoft Lumia 640 LTE Dual Sim - black - 4G HSPA+ - 8 GB - GSM - Windows smartphone
Product TypeWindows smartphone 4G
DisplayLCD display - 1280 x 720 pixels - colour - 5" - 294 ppi - Corning Gorilla Glass 3 (scratch resistant glass)
Integrated ComponentsRear-facing camera, front-facing camera, FM radio, voice recorder, navigation
ProcessorQUALCOMM Snapdragon 400 1.2 GHz ( quad-core )
MemoryRAM 1 GB - ROM 8 GB + microSDXC slot - up to 128 GB
Operating SystemWindows Phone OS 8.1 with Lumia Denim update
Rear-facing Camera Resolution8 Megapixel
Front-facing Camera Resolution0.9 Megapixel
Service ProviderNot specified
SIM Card Slot QtyDual-SIM
Wireless InterfaceWi-Fi, NFC, Bluetooth
Messaging ServicesSkype, WhatsApp, SMS, MMS
Talk TimeUp to 1590 minutes
Standby TimeUp to 864 hours
ColourBlack
Dimensions (WxDxH)72.2 mm x 8.8 mm x 141.3 mm
Weight145 g
SAR Value0.75 W/ kg (body) / 0.88 W/ kg (head)
Extended Specification
General
Product TypeWindows smartphone
Form FactorTouch
Integrated ComponentsRear-facing camera, front-facing camera, FM radio, voice recorder, navigation
Width72.2 mm
Depth8.8 mm
Height141.3 mm
Weight145 g
Body ColourBlack
SAR Value0.75 W/ kg (body) / 0.88 W/ kg (head)
Cellular
TechnologyWCDMA (UMTS) / GSM
BandWCDMA (UMTS) / GSM 850/ 900/ 1800/ 1900
Mobile Broadband Generation4G
Service ProviderNot specified
Operating SystemWindows Phone OS 8.1 with Lumia Denim update
NavigationA-GPS, GLONASS, BeiDou
SIM Card TypeMicro SIM
SIM Card Slot QtyDual-SIM
Input DeviceMulti-touch , capacitive
Messaging & Internet
Messaging ServicesSkype, WhatsApp, SMS, MMS
Supported Social Networks and BlogsTwitter, Facebook, LinkedIn
Communications
Data TransmissionGPRS, EDGE, HSDPA, HSUPA, HSPA+, TD-LTE, FDD-LTE
LTE BandLTE Band 4, LTE Band 1, LTE Band 3, LTE Band 5, LTE Band 7, LTE Band 20, LTE Band 2, LTE Band 12, LTE Band 8, LTE Band 38, LTE Band 40, LTE Band 28
Wireless InterfaceIEEE 802.11b/ g/ n, NFC, Bluetooth 4.0
WLAN SecurityWEP, WPA, WPA2, TKIP, AES
Bluetooth ProfilesHands Free Profile (HFP), Object Push Profile (OPP), Personal Area Networking Profile (PAN), Advanced Audio Distribution Profile (A2DP), Audio/ Video Remote Control Profile (AVRCP), Human Interface Device Profile (HID), Phonebook Access Profile (PBAP), Message Access Profile (MAP), Generic Attribute Profile (GATT)
Phone Features
Phone FunctionsSpeakerphone, voice control, call timer, conference call, vibrating alert
Dual SIM Card CapabilityYes
SensorsAccelerometer, ambient light sensor, proximity sensor, magnetometer
Additional FeaturesTTY compatible, DLNA Certified, Text-to-Speech (text recognition), sharing media via DLNA, Kid's Corner, Noise Cancellation Technology, Lumia Color profile, Word Flow keyboard, Power Saving Mode
Media Player
Supported Digital Audio StandardsAMR, MP3, AAC-LC
Supported Digital Video StandardsVC-1, AVC, MPEG-4, WMV, H.264, H.263
Processor
TypeQUALCOMM Snapdragon 400
Clock Speed1.2 GHz
Processor Core QtyQuad-core
Memory
RAM1 GB
Supported Flash Memory CardsmicroSDXC - up to 128 GB
Front-facing Camera
Sensor Resolution0.9 Megapixel
Rear-facing Camera
Sensor Resolution8 Megapixel
Lens ApertureF/ 2.2
Min Focal Length28 mm
Focus AdjustmentAutomatic
Digital Zoom4
Camera Light SourceLED light
Video Recorder Resolutions1920 x 1080 (1080p)
FeaturesVideo recording, Lumia Refocus
Display
TypeLCD display - colour
Diagonal Size5"
Display Resolution1280 x 720 pixels
Pixel Density294 ppi
Colour Depth16.7 million colours
ProtectionCorning Gorilla Glass 3 (scratch resistant glass)
FeaturesClearBlack
Connections
Connector TypeMicro-USB - 5 pin Micro-USB Type B 
Headset / AV composite out - mini-phone 3.5mm
Battery
Capacity2500 mAh
Run Time DetailsTalk ( GSM ) - up to 1590 min 
Talk ( WCDMA ) - up to 1050 min 
Playback ( video ) - up to 8.6 hrs 
Playback ( Music ) - up to 86 hrs 
Active online usage ( Wi-Fi ) - up to 10.8 hrs 
Standby - up to 864 hrs
Miscellaneous
Included AccessoriesPower adapter
What's in the box

Microsoft Lumia 640 LTE Dual Sim 
2500 mAh Battery 
Power adapter