Product
Xiaomi Mi 4s
Xiaomi Mi 4s
Vivo V17
Vivo V17
Battery
Charging 18W wired, QC2, 40% in 60 min 18W wired
Type Li-Ion 3260 mAh, non-removable 4500 mAh, non-removable
Body
Build - Glass front, plastic back, plastic frame
Dimensions 139.3 x 70.8 x 7.8 mm (5.48 x 2.79 x 0.31 in) 159 x 74.2 x 8.5 mm (6.26 x 2.92 x 0.33 in)
SIM Nano-SIM + Micro-SIM Nano-SIMNano-SIM + Nano-SIM
Weight 133 g (4.69 oz) 176 g (6.21 oz)
Comms
Bluetooth 4.1, A2DP 5.0, A2DP, LE
Infrared port Yes -
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS, GALILEO, BDS
Radio No No
USB USB Type-C USB Type-C 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Display
Resolution 1080 x 1920 pixels, 16:9 ratio (~441 ppi density) 1080 x 2400 pixels, 20:9 ratio (~409 ppi density)
Size 5.0 inches, 68.9 cm2 (~69.9% screen-to-body ratio) 6.44 inches, 100.1 cm2 (~84.9% screen-to-body ratio)
Type IPS LCD Super AMOLED
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Launch
Announced 2016, February. Released 2016, March 2019, November 23. Released 2019, December
Status Discontinued Discontinued
Main Camera
Features Dual-LED dual-tone flash, panorama, HDR LED flash, HDR, panorama
Quad - 48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth)
Single 13 MP, f/2.0, PDAF -
Video 1080p@30fps, 720p@120fps 4K@30fps, 1080p@30/60fps
Memory
Card slot microSDXC (uses shared SIM slot) microSDXC (dedicated slot)
Internal 64GB 3GB RAM 128GB 8GB RAM, 256GB 8GB RAM
  eMMC 5.0 UFS 2.1
Misc
Colors Black, White, Gold, Pink Admiral Blue, Glacier Ice White, Midnight Ocean Black
Models - 1919
SAR - 0.99 W/kg (head)     0.25 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 1900 / 2100 HSDPA 850 / 900 / 2100
4G bands 1, 3, 7, 38, 39, 40, 41 1, 3, 5, 8, 38, 40, 41
Speed HSPA, LTE Cat4 150/50 Mbps HSPA, LTE
Technology GSM / CDMA / HSPA / LTE GSM / HSPA / LTE
  TD-SCDMA 1, 3, 5, 7, 8, 38, 40, 41
Our Tests
Audio quality Noise -94.9dB / Crosstalk -82.6dB -
Battery (old) Endurance rating 75h -
Camera Photo / Video -
Display Contrast ratio: 975:1 (nominal), 2.095 (sunlight) -
Loudspeaker Voice 73dB / Noise 68dB / Ring 82dB -
Performance Basemark OS II 2.0: 1545Basemark X: 12990 -
Platform
Chipset Qualcomm MSM8992 Snapdragon 808 (20 nm) Qualcomm SDM675 Snapdragon 675 (11 nm)
CPU Hexa-core (4x1.4 GHz Cortex-A53 & 2x1.8 GHz Cortex-A57) Octa-core (2x2.0 GHz Kryo 460 Gold & 6x1.7 GHz Kryo 460 Silver)
GPU Adreno 418 Adreno 612
OS Android 5.1 (Lollipop), upgradable to 7.0 (Nougat), MIUI 10 Android 9.0 (Pie), Funtouch 9.2
Selfie camera
Features - HDR
Single 5 MP, f/2.0 32 MP, f/2.5, 23mm (wide), 1/2.8", 0.8µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes