Product
Vivo X20 Plus
Vivo X20 Plus
Xiaomi Mi 8 Explorer
Xiaomi Mi 8 Explorer
Battery
Charging 22.5W wired 18W wired, QC4
Type Li-Ion 3900 mAh, non-removable Li-Po 3000 mAh, non-removable
Body
Build Glass front, aluminum back, aluminum frame Glass front (Gorilla Glass 5), glass back, aluminum frame (7000 series)
Dimensions 165.3 x 80.1 x 7.5 mm (6.51 x 3.15 x 0.30 in) 154.9 x 74.8 x 7.6 mm (6.10 x 2.94 x 0.30 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 181.5 g (6.42 oz) 177 g (6.24 oz)
Comms
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE, aptX HD
NFC No Yes
Positioning GPS GPS (L1+L5), GLONASS (L1), BDS (B1), GALILEO (E1+E5a), QZSS (L1+L5)
Radio No No
USB microUSB 2.0, OTG USB Type-C
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, DLNA
Display
Protection - Corning Gorilla Glass 5
Resolution 1080 x 2160 pixels, 18:9 ratio (~376 ppi density) 1080 x 2248 pixels (~402 ppi density)
Size 6.43 inches, 106.7 cm2 (~80.6% screen-to-body ratio) 6.21 inches, 97.1 cm2 (~83.8% screen-to-body ratio)
Type Super AMOLED Super AMOLED, HDR10
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Face ID, fingerprint (under display, optical), accelerometer, gyro, proximity, barometer, compass
Launch
Announced 2017, September. Released 2017, October 2018, May. Released 2018, July
Status Discontinued Discontinued
Main Camera
Dual 12 MP, f/1.8, AF 5 MP, f/2.4, (depth) 12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF, 4-axis OIS 12 MP, f/2.4, 1/3.4", 1.0µm, AF, 2x optical zoom
Features LED flash, HDR, panorama Dual-LED flash, HDR, panorama
Video 1080p@30fps 4K@60fps, 1080p@30/240fps, 720p@960fps
Memory
Card slot microSDXC (uses shared SIM slot) No
Internal 64GB 4GB RAM 128GB 8GB RAM
  eMMC 5.1 -
Misc
Colors Matte Black, Gold, Rose gold Black (transparent back)
Models 1720 -
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 / 1700(AWS) / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 34, 38, 39, 40, 41 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 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 (4CA) Cat16 1024/150 Mbps
Technology GSM / CDMA / HSPA / LTE GSM / CDMA / HSPA / LTE
  1, 2, 3, 4, 5, 8 - X20A Plus CDMA 800 & TD-SCDMA
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 8.1 (Oreo), upgradable to Android 10, MIUI 12
Selfie camera
Single 12 MP, f/2.0, (wide), 1/2.8", 1.28µm 20 MP, f/2.0, (wide), 1/3", 0.9µm TOF 3D, (depth/biometrics sensor)
Video 1080p@30fps
Sound
3.5mm jack Yes No
Loudspeaker Yes Yes
  32-bit/192kHz audio -