Product
Vivo X20 Plus
Vivo X20 Plus
Xiaomi Black Shark
Xiaomi Black Shark
Battery
Charging 22.5W wired 18W wired, QC3
Type Li-Ion 3900 mAh, non-removable Li-Ion 4000 mAh, non-removable
Body
Build Glass front, aluminum back, aluminum frame Glass front, aluminum back, aluminum frame
Dimensions 165.3 x 80.1 x 7.5 mm (6.51 x 3.15 x 0.30 in) 161.6 x 75.4 x 9.3 mm (6.36 x 2.97 x 0.37 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 181.5 g (6.42 oz) 190 g (6.70 oz)
Comms
Bluetooth 5.0, A2DP, LE 5.0, A2DP, aptX HD, LE
NFC No No
Positioning GPS GPS, GLONASS, BDS
Radio No No
USB microUSB 2.0, OTG USB Type-C 2.0
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
Resolution 1080 x 2160 pixels, 18:9 ratio (~376 ppi density) 1080 x 2160 pixels, 18:9 ratio (~403 ppi density)
Size 6.43 inches, 106.7 cm2 (~80.6% screen-to-body ratio) 5.99 inches, 92.6 cm2 (~76.0% screen-to-body ratio)
Type Super AMOLED IPS LCD
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Fingerprint (front-mounted), accelerometer, gyro, proximity, compass
Launch
Announced 2017, September. Released 2017, October 2018, April. Released 2018, April
Status Discontinued Discontinued
Main Camera
Dual 12 MP, f/1.8, AF 5 MP, f/2.4, (depth) 12 MP, f/1.8, 1/2.9", 1.25µm, dual pixel PDAF 20 MP, f/1.8, 1.0µm, AF, 2x optical zoom
Features LED flash, HDR, panorama Dual-LED dual-tone flash, HDR, panorama
Video 1080p@30fps 4K@30fps, 1080p@30fps, 720p@120fps
Memory
Card slot microSDXC (uses shared SIM slot) No
Internal 64GB 4GB RAM 64GB 6GB RAM, 128GB 8GB RAM
  eMMC 5.1 UFS 2.1
Misc
Colors Matte Black, Gold, Rose gold Black, Gray, Royal Blue
Models 1720 SKR-H0, SKR-A0, SHARK KSR-H0
Network
2G bands GSM 900 / 1800 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 34, 38, 39, 40, 41 1, 3, 4, 5, 7, 8, 12, 34, 38, 39, 40, 41
Speed HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps HSPA 42.2/5.76 Mbps, LTE (3CA) Cat16 1024/150 Mbps
Technology GSM / CDMA / HSPA / LTE GSM / CDMA / HSPA / EVDO / LTE
  1, 2, 3, 4, 5, 8 - X20A Plus CDMA2000 1xEV-DO
Platform
Chipset Qualcomm SDM660 Snapdragon 660 (14 nm) Qualcomm SDM845 Snapdragon 845 (10 nm)
CPU Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.8 GHz Kryo 385 Silver)
GPU Adreno 512 Adreno 630
OS Android 7.1.1 (Nougat), upgradable to Android 8.0 (Oreo), Funtouch 3.2 Android 8.0 (Oreo)
Selfie camera
Single 12 MP, f/2.0, (wide), 1/2.8", 1.28µm 20 MP, f/2.2, (wide), 1/2.8", 1.0µm
Video 1080p@30fps
Sound
3.5mm jack Yes No
Loudspeaker Yes Yes, with stereo speakers
  32-bit/192kHz audio -