Microsoft Lumia 640 Dual SIM

General Information

• Colors:
• Glossy cyan, Orange, White, Matte black

• Price:
• About 170 EUR

Network/Bearer

• Technology:
• GSM / HSPA

• 2G bands:
• GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2

• 3G bands:
• HSDPA 850 / 900 / 1900 / 2100

• Speed:
• HSPA 42.2/5.76 Mbps

Launch

• Announced:
• 2015, March

• Status:
• Available. Released 2015, April

Physical Specifications

• Dimensions:
• 141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in)

• Weight:
• 145 g (5.11 oz)

• SIM:
• Dual SIM (Micro-SIM, dual stand-by)

Display

• Type:
• IPS LCD capacitive touchscreen, 16M colors

• Size:
• 5.0 inches, 68.9 cm2 (~67.6% screen-to-body ratio)

• Resolution:
• 720 x 1280 pixels, 16:9 ratio (~294 ppi density)

• Protection:
• Corning Gorilla Glass 3, ClearBlack display

Platform

• OS:
• Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10

• Chipset:
• Qualcomm MSM8926 Snapdragon 400 (28 nm)

• CPU:
• Quad-core 1.2 GHz Cortex-A7

• GPU:
• Adreno 305

Memory

• Card slot:
• microSD, up to 256 GB (dedicated slot)

• Internal:
• 8GB 1GB RAM

Main Camera

• Single:
• 8 MP, f/2.2, 28mm (wide), 1/4", AF

• Features:
• LED flash

• Video:
• 1080p@30fps

Selfie Camera

• Single:
• 1 MP

• Video:
• 720p

Sound

• Loudspeaker:
• Yes

• 3.5mm jack:
• Yes

Connectivity

• WLAN:
• Wi-Fi 802.11 b/g/n, DLNA, hotspot

• Bluetooth:
• 4.0, A2DP

• GPS:
• Yes, with A-GPS, GLONASS, BDS

• Radio:
• FM radio

• USB:
• microUSB 2.0

Features

• Sensors:
• Accelerometer, proximity, compass

• Messaging:
• SMS(threaded view), MMS, Email, Push Email, IM

• Browser:
• HTML5

Battery

• Browser:
• HTML5, Removable Li-Ion 2500 mAh battery

• Stand-by:
• Up to 840 h (2G) / Up to 840 h (3G)

• Talk time:
• Up to 27 h 30 min (2G) / Up to 20 h 30 min (3G)

Tests

• Display:
• Contrast ratio: 1034 (nominal), 2.563 (sunlight)

• Loudspeaker:
• Voice 70dB / Noise 65dB / Ring 75dB

• Audio quality:
• Noise -93.1dB / Crosstalk -93.2dB

• Battery life:
• Endurance rating 76h