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Specifications
 

Microsoft Lumia 640 XL

Nokia Lumia 830

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Microsoft Lumia 640 XL
MORE PICTURES Nokia Lumia 830
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Microsoft Lumia 640 XL

Nokia Lumia 830

Network
Technology GSM / HSPA GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G Network 1, 3, 7, 8, 20
  2, 4, 5, 17 - AT&T
Speed HSPA 42.2/5.76 Mbps HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Launch
Announced 2015, March. Released 2015, April 2014, September. Released 2014, September
Status Discontinued Discontinued
Body
Dimensions 157.9 x 81.5 x 9 mm (6.22 x 3.21 x 0.35 in) 139.4 x 70.7 x 8.5 mm (5.49 x 2.78 x 0.33 in)
Weight 171 g (6.03 oz) 150 g (5.29 oz)
SIM Micro-SIM Nano-SIM
Display
Type IPS LCD IPS LCD
Size 5.7 inches, 88.9 cm2 (~69.1% screen-to-body ratio) 5.0 inches, 68.9 cm2 (~69.9% screen-to-body ratio)
Resolution 720 x 1280 pixels, 16:9 ratio (~259 ppi density) 720 x 1280 pixels, 16:9 ratio (~294 ppi density)
Protection Corning Gorilla Glass 3 Corning Gorilla Glass 3
 ClearBlack display ClearBlack display
Platform
OS Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10 Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10
Chipset Qualcomm MSM8226 Snapdragon 400 (28 nm) Qualcomm Snapdragon 400 (28 nm)
CPU Quad-core 1.2 GHz Cortex-A7 Quad-core 1.2 GHz Cortex-A7
GPU Adreno 305 Adreno 305
Memory
Card slot microSDXC (dedicated slot) microSDXC (dedicated slot)
Internal 8GB 1GB RAM 16GB 1GB RAM
 eMMC 4.5 eMMC 4.5
Main Camera
Modules 13 MP, f/2.0, 28mm (wide), 1/3.0", AF 10 MP, f/2.2, 26mm (wide), 1/3.4", AF, OIS
Features Zeiss optics, LED flash Zeiss optics, LED flash, panorama
Video 1080p@30fps 1080p@30fps, stereo sound rec.
Selfie Camera
Modules 5 MP 0.9 MP
Video 1080p@30fps 720p
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Sound
Loudspeaker Yes Yes
3.5mm jack Yes Yes
Comms
WLAN Wi-Fi 802.11 b/g/n, DLNA, hotspot Wi-Fi 802.11 a/b/g/n, dual-band, DLNA, hotspot
Bluetooth 4.0, A2DP 4.0, A2DP, EDR, LE, aptX
Positioning GPS, GLONASS, BDS GPS, GLONASS, BDS
NFC Yes Yes
Infrared port No No
Radio FM radio FM radio
USB microUSB 2.0 microUSB 2.0
Features
Sensors Accelerometer, proximity, compass, sensor core Accelerometer, gyro, proximity, compass
Battery
Type Li-Ion 3000 mAh, removable Li-Ion 2200 mAh, removable (BV-L4A)
Charging Wireless (Qi)
Stand-by Up to 936 h (2G) / Up to 936 h (3G) Up to 528 h
Talk time Up to 31 h 20 min (2G) / Up to 23 h 40 min (3G) Up to 12 h 54 min (2G) / Up to 14 h 48 min (3G)
Music play Up to 78 h
Misc
Colors Matte cyan, Orange, Black, Matte white, Glossy white Orange, green, white, black, gold
SAR 0.87 W/kg (head)     0.83 W/kg (body)    
SAR EU 0.46 W/kg (head)     0.59 W/kg (body)    
Price About 170 EUR About 330 EUR
Tests
Display Contrast ratio: 1119:1 (nominal), 3.065 (sunlight) Contrast ratio: 1078 (nominal), 1887 (sunlight)
Loudspeaker Voice 65dB / Noise 66dB / Ring 78dB
Audio quality Noise -93.0dB / Crosstalk -94.4dB Noise -89.7dB / Crosstalk -91.6dB
Battery (old) Endurance rating 74h Endurance rating 68h

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