Product
Vivo Y51s
Vivo Y51s
Honor 9
Honor 9
Battery
Charging 18W wired 18W wired, 40% in 30 min
Type 4500 mAh Li-Po 3200 mAh, non-removable
Body
Build - Glass front (Gorilla Glass 3), glass back, aluminum frame
Dimensions 162 x 76.6 x 8.5 mm (6.38 x 3.02 x 0.33 in) 147.3 x 70.9 x 7.5 mm (5.80 x 2.79 x 0.30 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 190 g (6.70 oz) 155 g (5.47 oz)
Comms
Bluetooth 5.0, A2DP, LE, aptX HD 4.2, A2DP, LE
Infrared port - Yes
NFC No Yes
Positioning GPS, GLONASS, BDS, GALILEO GPS, GLONASS, BDS
Radio No No
USB microUSB 2.0, OTG USB Type-C, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, 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 2340 pixels, 19.5:9 ratio (~395 ppi density) 1080 x 1920 pixels, 16:9 ratio (~428 ppi density)
Size 6.53 inches, 104.7 cm2 (~84.4% screen-to-body ratio) 5.15 inches, 73.1 cm2 (~70.0% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Fingerprint (side-mounted), accelerometer, proximity, compass Fingerprint (front-mounted), accelerometer, gyro, proximity, compass
Launch
Announced 2020, July 24 2017, June. Released 2017, July
Status Available. Released 2020, July 29 Discontinued
Main Camera
Dual - 12 MP, f/2.2, 27mm (wide), PDAF, 2x lossless zoom 20 MP B/W, f/2.2, 27mm (wide), 1/2.7"
Features LED flash, HDR, panorama Dual-LED dual-tone flash, HDR, panorama
Triple 48 MP, f/1.8, 25mm (wide), 1/2.0", 0.8µm, PDAF 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) -
Video 4K@30fps, 1080p@30fps; gyro-EIS 4K@30fps, 1080p@30fps (gyro-EIS), 1080p@60fps
Memory
Card slot No microSDXC (uses shared SIM slot)
Internal 128GB 6GB RAM, 128GB 8GB RAM 64GB 4GB RAM, 64GB 6GB RAM, 128GB 4GB RAM, 128GB 6GB RAM
  UFS 2.1 -
Misc
Colors Black, Blue, White Glacier Grey, Sapphire Blue, Midnight Black, Gold, Blue Bird, Robin Egg Blue
Models V2002A STF-AL00, STF-AL10, STF-AL10, STF-TL10, STF-L09, STF-L09S
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 900 / 1700(AWS) / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 3, 4, 5, 8, 34, 38, 39, 40, 41 1, 3, 5, 7, 8, 20, 38, 40, 41
5G bands 1, 41, 78 SA/NSA -
Speed HSPA, LTE, 5G (3.6+ Gbps DL) HSPA 42.2/5.76 Mbps, LTE (3CA) Cat12 600/150 Mbps
Technology GSM / CDMA / HSPA / LTE / 5G GSM / HSPA / LTE
  CDMA 800 / 1900 & TD-SCDMA -
Our Tests
Audio quality - Noise -89.1dB / Crosstalk -86.7dB
Battery (old) - Endurance rating 77h
Camera - Photo / Video
Display - Contrast ratio: 1479:1 (nominal), 3.289 (sunlight)
Loudspeaker - Voice 68dB / Noise 71dB / Ring 80dB
Performance - AnTuTu: 156984 (v7) GeekBench: 6457 (v4.4) GFXBench: 14fps (ES 3.1 onscreen)
Platform
Chipset Exynos 880 (8 nm) Kirin 960 (16 nm)
CPU Octa-core (2x2.0 GHz Cortex-A77 & 6x1.8 GHz Cortex-A55) Octa-core (4x2.4 GHz Cortex-A73 & 4x1.8 GHz Cortex-A53)
GPU Mali-G76 MP5 Mali-G71 MP8
OS Android 10, Funtouch 10.5 Android 7.0 (Nougat), upgradable to Android 9.0 (Pie), EMUI 9.1
Selfie camera
Features HDR -
Single 8 MP, f/2.0, (wide) 8 MP, f/2.0
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes