Microsoft Lumia 640 (Dual-Sim 3G) All specs

Full specifications phone: Microsoft Lumia 640 (Dual-Sim 3G) specs, detailed technical information, features, price and review. All about this phone.

3/26/2015 9:20 PM, updated: 5/11/2020 1:23 PM

Good Windows Phone phone with 1.2Ghz Quad-Core processor provides good performance and great system execution of the Microsoft Lumia 640 (Dual-Sim 3G).

An advantage of the Microsoft Lumia 640 (Dual-Sim 3G) is the possibility of using two mobile carriers, a Dual-SIM device with two SIM card slots.

Good connectivity of this device includes Bluetooth 4.0 + A2DP, WiFi 802.11 b/g/n (2.4Ghz), but it lacks NFC connection.

Including the battery, the Microsoft Lumia 640 (Dual-Sim 3G) phone has 145 grams and it's a very thin device, only 8.8mm.

3.7/10

Physical features	Microsoft Lumia 640
Model
Other model names	Microsoft Lumia 640 3G Dual Sim, Microsoft RM-1109
Country or region available	feature not registered
Brand	Microsoft
Release date	April, 2015
Depth	8.8 millimeters (0.35 inches)
Size (width x height)	72.2 x 141.3 millimeters (2.84 x 5.56 in)
Weight	145 grams (5.08 ounces)
Qwerty physical keyboard	Not supported
Antenna	Internal antenna
Build, materials	feature not registered
Protection against water and others	Not supported
System (OS)	Microsoft Lumia 640
Operating system	Windows Phone 8.1
Firmware update	feature not registered
Hardware	Microsoft Lumia 640
Chipset	32bit - Qualcomm Snapdragon 400 MSM8926 (28nm)
CPU processor	1.2Ghz Quad-Core ARM Cortex-A7
GPU graphical controller	Qualcomm Adreno 305 400Mhz
RAM memory	1GB LPDDR2
Internal storage	8GB (3GB available)
External storage	Until 128GB microSD, microSDXC (dedicated slot)
Display	Microsoft Lumia 640
Display type	TFT IPS LCD
Screen size	5" inches
Screen-to-body ratio	~67.6% (screen-to-body ratio)
Display resolution	720x1280 pixels
Touchscreen	Capacitive Multitouch
Pixel density (dot pitch)	294 PPI
Colors	16 million
Scratch-resistant glass	Gorilla Glass 3
Display features	feature not registered
Mobile networks	Microsoft Lumia 640
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated slot)
SIM card	2 slots (Dual-SIM) micro-SIM (3FF)
Maximum download/upload	42/5.76 Mbps
Network technology	2G, 3G
Frequency, bands	Expand band detailsCollapse details
GSM Mhz band	Quad-Band 850/900/1800/1900
Primary 2G network	GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1900/2100
Primary 4G network	Not supported
Primary 5G network	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+
Secondary 2G network	GSM 850/900/1800/1900
Secondary 3G network	Not supported
Secondary 4G network	Not supported
Secondary data network	GPRS, EDGE
Calling	Microsoft Lumia 640
Messaging	SMS (T9), MMS, E-mail, Push mail
Speakerphone	Supported
Video calling	Supported
Call control	Voice dialing, Voice recorder
Camera	Microsoft Lumia 640
Back camera (main camera)	8 megapixels
Main camera resolution	3264x2448 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps
Flash	LED flash
Focal aperture	f/2.2 (aperture)
Focal length	feature not registered
Sensor size	1/4" inches
Pixel size	feature not registered
Autofocus	Autofocus
Touch focus	Supported
Image stabilization	feature not registered
Zoom	Only digital zoom
Face/smile detection	Face detection
BSI sensor	Supported
HDR	HDR photo only main camera
2ª camera	Microsoft Lumia 640
Front camera (secondary)	1 megapixels
Front camera resolution	1280x720 pixels
Video recording (secondary)	HD (1280x720)
Front flash	Not supported
Focal aperture	feature not registered
Focal length	feature not registered
Sensor size	feature not registered
Pixel size	feature not registered
Multimedia	Microsoft Lumia 640
Radio	FM
TV	Not supported
Video formats	MP4, H.264, H.263, WMV
Audio formats	MP3, WAV, WMA, eAAC+
Connectivity	Microsoft Lumia 640
USB	MicroUSB 2.0
TV output	Not supported
Audio output	3.5mm jack
Bluetooth	4.0 + A2DP
WiFi	802.11 b/g/n (2.4Ghz)
DLNA	Supported
NFC	Not supported
GPS	A-GPS, GeoTagging, GLONASS
Infrared port	Not supported
Other functions	Microsoft Lumia 640
Active noise cancellation	Supported
Vibrating alert	Supported
Ringtones	Polyphonic and customized
Web browser	HTML, XHTML, HTML5
Sensors	Accelerometer Proximity sensor Compass Ambient Light sensor
Other features	- Colors: Black - Lumia Denim UI - Microsoft ClearBlack display - OneDrive 30GB - Beidou GPS - WiFi hotspot
Power supply	Microsoft Lumia 640
Battery	Li-Ion: Lithium-Ion (Removable)
Battery capacity	2500 mAh
Charger, watts	Standard charging
Talk time autonomy	1200 minutes \| 20 hours \| 0.8 day
Standby	50400 minutes \| 840 hours \| 35 days
Radiation rate	Microsoft Lumia 640
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered