Product
Vivo V9 Youth
Vivo V9 Youth
Vivo S1
Vivo S1
Battery
Charging - 18W wired
Type Li-Ion 3260 mAh, non-removable 4500 mAh, non-removable
Body
Build Glass front (Gorilla Glass 3), plastic back, plastic frame Glass front, plastic back, plastic frame
Dimensions 154.8 x 75.1 x 7.9 mm (6.09 x 2.96 x 0.31 in) 159.5 x 75.2 x 8.1 mm (6.28 x 2.96 x 0.32 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 150 g (5.29 oz) 179 g (6.31 oz)
Comms
Bluetooth 4.2, A2DP, LE 5.0, A2DP, LE
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS, GALILEO, 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/ac, dual-band, Wi-Fi Direct
Display
Protection Corning Gorilla Glass 3 -
Resolution 1080 x 2280 pixels, 19:9 ratio (~400 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~404 ppi density)
Size 6.3 inches, 99.1 cm2 (~85.2% screen-to-body ratio) 6.38 inches, 99.9 cm2 (~83.3% screen-to-body ratio)
Type IPS LCD Super AMOLED
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, proximity, compass
Launch
Announced 2018, April. Released 2018, April 2019, July 17. Released 2019, July
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 LED flash, HDR, panorama
Triple - 16 MP, f/1.8, (wide), 1/2.8", 1.12µm, PDAF 8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (depth)
Video 1080p@30fps 1080p@30fps
Memory
Card slot microSDXC (dedicated slot) microSDXC (dedicated slot)
Internal 32GB 4GB RAM, 64GB 4GB RAM 64GB 6GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 256GB 6GB RAM
  eMMC 5.1 eMMC 5.1
Misc
Colors Champagne Gold, Pearl Black, Red Diamond Black, Skyline Blue, Cosmic Green
Models 1727, 1726 1907, V1907, 1907_19, V1913A
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 2100
4G bands 1, 3, 5, 8, 38, 40, 41 1, 3, 5, 7, 8, 20, 38, 40, 41 - Asia
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/150 Mbps
Technology GSM / HSPA / LTE GSM / HSPA / LTE
  - 1, 3, 5, 8, 34, 38, 39, 40, 41 - China
Platform
Chipset Qualcomm SDM450 Snapdragon 450 (14 nm) Mediatek MT6768 Helio P65 (12 nm)
CPU Octa-core 1.8 GHz Cortex-A53 Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55)
GPU Adreno 506 Mali-G52 MC2
OS Android 8.1 (Oreo), Funtouch 4 Android 9.0 (Pie), Funtouch 9
Selfie camera
Features - HDR
Single 16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes