Product
Vivo V9 Youth
Vivo V9 Youth
₹19,990
Xiaomi Redmi Note 4
Xiaomi Redmi Note 4
₹15,338
Battery
Type Li-Ion 3260 mAh, non-removable Li-Po 4100 mAh, non-removable
Body
Build Glass front (Gorilla Glass 3), plastic back, plastic frame Glass front, aluminum back, aluminum frame
Dimensions 154.8 x 75.1 x 7.9 mm (6.09 x 2.96 x 0.31 in) 151 x 76 x 8.5 mm (5.94 x 2.99 x 0.33 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Micro-SIM
Weight 150 g (5.29 oz) 165 g (5.82 oz)
Comms
Bluetooth 4.2, A2DP, LE 4.1, A2DP, LE
Infrared port - Yes
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS, BDS
Radio FM radio, recording FM radio
USB microUSB 2.0, OTG microUSB 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct
Display
Protection Corning Gorilla Glass 3 -
Resolution 1080 x 2280 pixels, 19:9 ratio (~400 ppi density) 1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
Size 6.3 inches, 99.1 cm2 (~85.2% screen-to-body ratio) 5.5 inches, 83.4 cm2 (~72.7% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Launch
Announced 2018, April. Released 2018, April 2017, January. Released 2017, January
Status Discontinued Discontinued
Main Camera
Dual 16 MP, PDAF 2 MP, (depth) or 13 MP, PDAF 2 MP, (depth) (China only) -
Features Dual-LED flash, HDR, panorama Dual-LED dual-tone flash, panorama, HDR
Single - 13 MP, f/2.0, 1/3.1", 1.12µm, PDAF
Video 1080p@30fps 1080p@30fps, 720p@120fps
Memory
Card slot microSDXC (dedicated slot) microSDXC (uses shared SIM slot)
Internal 32GB 4GB RAM, 64GB 4GB RAM 32GB 3GB RAM, 64GB 3GB RAM, 64GB 4GB RAM
  eMMC 5.1 eMMC 5.1
Misc
Colors Champagne Gold, Pearl Black, Red Dark Gray, Gold, Black, Lake Blue
Models 1727, 1726 2016100
SAR EU - 0.72 W/kg (head)     0.67 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 3, 5, 8, 38, 40, 41 1, 3, 4, 5, 7, 8, 20, 38, 40
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Technology GSM / HSPA / LTE GSM / HSPA / LTE
Our Tests
Audio quality - Noise -94.6dB / Crosstalk -94.3dB
Battery (old) - Endurance rating 119h
Camera - Photo / Video
Display - Contrast ratio: 1503:1 (nominal), 2.714 (sunlight)
Loudspeaker - Voice 67dB / Noise 70dB / Ring 81dB
Performance - GFXBench: 3.4fps (ES 3.1 onscreen)
Platform
Chipset Qualcomm SDM450 Snapdragon 450 (14 nm) Qualcomm MSM8953 Snapdragon 625 (14 nm)
CPU Octa-core 1.8 GHz Cortex-A53 Octa-core 2.0 GHz Cortex-A53
GPU Adreno 506 Adreno 506
OS Android 8.1 (Oreo), Funtouch 4 Android 6.0 (Marshmallow), upgradable to 7.0 (Nougat), MIUI 11
Selfie camera
Single 16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm 5 MP, f/2.0
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
  - 24-bit/192kHz audio
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