Microsoft Lumia 640 LTE

Network
Technology
GSM / HSPA / LTE

2G bands
GSM 850 / 900 / 1800 / 1900

3G bands
HSDPA 850 / 900 / 2100

HSDPA 850 / 1700(AWS) / 1900 / 2100 – T-Mobile

4G bands
1, 3, 7, 8, 20

1, 2, 4, 5, 7, 12, 17 – T-Mobile

Speed
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps

Launch
Announced
2015, March. Released 2015, April

Status
Discontinued

Body
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
Micro-SIM

Display
Type
IPS LCD

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
microSDXC (dedicated slot)

Internal
8GB 1GB RAM

eMMC 4.5

Main Camera
Single
8 MP, f/2.2, 28mm (wide), 1/4.0″, AF

Features
LED flash

Video
1080p@30fps

Selfie camera
Single
1 MP

Video
720p

Sound
Loudspeaker
Yes

3.5mm jack
Yes

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

Bluetooth
4.0, A2DP

Positioning
GPS, GLONASS, BDS

NFC
Yes

Radio
FM radio

USB
microUSB 2.0

Features
Sensors
Accelerometer, proximity, compass

Battery
Type
Li-Ion 2500 mAh, removable

Stand-by
Up to 864 h (2G) / Up to 864 h (3G)

Talk time
Up to 26 h 30 min (2G) / Up to 17 h 30 min (3G)

Misc
Colors
Glossy cyan, Orange, White, Matte black

Price
About 120 EUR

Tests
Display

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

Camera

Photo / Video

Loudspeaker

Voice 70dB / Noise 65dB / Ring 75dB

Audio quality

Noise -93.1dB / Crosstalk -93.2dB

Battery (old)

Endurance rating 76h

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