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vivo Y31 (2015)
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vivo Y31 (2015)

Samsung Galaxy Note8
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Network
Technology GSM / HSPA GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G Network HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Network 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66
Speed HSPA HSPA 42.2/5.76 Mbps, LTE (5CA) Cat16 1024/150 Mbps
Launch
Announced 2015, September. Released 2015, October 2017, August 23
Status Discontinued Available. Released 2017, September
Body
Dimensions 137.2 x 68.8 x 8.4 mm (5.40 x 2.71 x 0.33 in) 162.5 x 74.8 x 8.6 mm (6.40 x 2.94 x 0.34 in)
Weight 137 g (4.83 oz) 195 g (6.88 oz)
Build Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
SIM Dual SIM Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by)
  IP68 dust/water resistant (up to 1.5m for 30 min)
Stylus
Display
Type IPS LCD Super AMOLED, HDR10
Size 4.7 inches, 60.9 cm2 (~64.5% screen-to-body ratio) 6.3 inches, 101.1 cm2 (~83.2% screen-to-body ratio)
Resolution 720 x 1280 pixels, 16:9 ratio (~312 ppi density) 1440 x 2960 pixels, 18.5:9 ratio (~521 ppi density)
Protection Corning Gorilla Glass 5
  3D Touch (home button only)
Always-on display
Platform
OS Android 5.1 (Lollipop), Funtouch 2.1 Android 7.1.1 (Nougat), upgradable to Android 9.0 (Pie)
Chipset Mediatek MT6580 (28 nm) Exynos 8895 (10 nm) - EMEA
Qualcomm MSM8998 Snapdragon 835 (10 nm) - USA & China
CPU Quad-core 1.3 GHz Cortex-A7 Octa-core (4x2.3 GHz Mongoose M2 & 4x1.7 GHz Cortex-A53) - EMEA
Octa-core (4x2.35 GHz Kryo & 4x1.9 GHz Kryo) - USA & China
GPU Mali-400MP2 Mali-G71 MP20 - EMEA
Adreno 540 - USA & China
Memory
Card slot microSDXC (dedicated slot) microSDXC (uses shared SIM slot) - dual SIM model only
Internal 8GB 1GB RAM 64GB 6GB RAM, 128GB 6GB RAM, 256GB 6GB RAM
  UFS 2.1
Main Camera
Modules 8 MP 12 MP, f/1.7, 26mm (wide), 1/2.55", 1.4µm, dual pixel PDAF, OIS
12 MP, f/2.4, 52mm (telephoto), 1/3.6", 1.0µm, AF, OIS, 2x optical zoom
Features LED flash, HDR LED flash, auto-HDR, panorama
Video 720p@30fps 4K@30fps, 1080p@30/60fps, 720p@240fps, stereo sound rec., HDR, gyro-EIS
Selfie Camera
Modules 2 MP 8 MP, f/1.7, 25mm (wide), 1/3.6", 1.22µm, AF
2 MP (dedicated iris scanner camera)
Features Dual video call, Auto-HDR
Video 1440p@30fps
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Sound
Loudspeaker Yes Yes
3.5mm jack Yes Yes
  32-bit/384kHz audio
Comms
WLAN Wi-Fi 802.11 b/g/n, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth 4.0, A2DP 5.0, A2DP, LE, aptX
Positioning GPS GPS, GLONASS, BDS, GALILEO
NFC No Yes
Infrared port No No
Radio FM radio No
USB microUSB 2.0 USB Type-C 3.1
Features
Sensors Accelerometer, proximity, compass Iris scanner, fingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer, heart rate, SpO2
  Samsung DeX (desktop experience support)
ANT+
Bixby natural language commands and dictation
Samsung Pay (Visa, MasterCard certified)
Battery
Type 2100 mAh, removable Li-Ion 3300 mAh, non-removable
Charging 15W wired, QC2
Wireless (Qi/PMA) (market dependent)
Talk time Up to 22 h (3G)
Music play Up to 74 h
Misc
Colors White, Black Midnight Black, Maple Gold, Orchid Gray, Deep Sea Blue, Star Pink
SAR 0.61 W/kg (head)     0.56 W/kg (body)    
SAR EU 0.17 W/kg (head)     1.29 W/kg (body)    
Models Y31L, Y31 SM-N950F, SM-N950U, SM-N9500, SM-N950U1, SM-N950N, SM-N950W, SC-01K, SM-N950FD
Price About 130 EUR About 500 EUR
Tests
Performance AnTuTu: 201065 (v7)
GeekBench: 6784 (v4.4)
GFXBench: 13fps (ES 3.1 onscreen)
Display Contrast ratio: Infinite (nominal), 4.148(sunlight)
Loudspeaker Voice 67dB / Noise 69dB / Ring 71dB
Audio quality Noise -92.5dB / Crosstalk -93.2dB
Battery (old) Endurance rating 89h

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