Product
Xiaomi Mi 8
Xiaomi Mi 8
Vivo V17 (Russia)
Vivo V17 (Russia)
Battery
Charging 18W wired, QC4 18W wired
Type Li-Po 3400 mAh, non-removable 4500 mAh, non-removable
Body
Build Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame (7000 series) Glass front, plastic back, plastic frame
Dimensions 154.9 x 74.8 x 7.6 mm (6.10 x 2.94 x 0.30 in) 159.3 x 75.2 x 8.7 mm (6.27 x 2.96 x 0.34 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 175 g (6.17 oz) 186.7 g (6.60 oz)
Comms
Bluetooth 5.0, A2DP, LE, aptX HD 5.0, A2DP, LE
NFC Yes Yes
Positioning GPS (L1+L5), GLONASS (L1), BDS (B1), GALILEO (E1+E5a), QZSS (L1+L5) GPS, GLONASS, GALILEO, BDS
Radio No FM radio
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, DLNA Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Display
Protection Corning Gorilla Glass 5 -
Resolution 1080 x 2248 pixels (~402 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~404 ppi density)
Size 6.21 inches, 97.1 cm2 (~83.8% screen-to-body ratio) 6.38 inches, 99.9 cm2 (~83.4% screen-to-body ratio)
Type Super AMOLED, HDR10 Super AMOLED
Features
Sensors Infrared Face ID, fingerprint (rear-mounted), accelerometer, gyro, proximity, barometer, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Launch
Announced 2018, May. Released 2018, June 2019, November. Released 2019, December
Status Discontinued Discontinued
Main Camera
Dual 12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF, 4-axis OIS 12 MP, f/2.4, 56mm (telephoto), 1/3.4", 1.0µm, AF, 2x optical zoom -
Features Dual-LED flash, HDR, panorama 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)
Video 4K@30/60fps, 1080p@30/120/240fps, 720p@960fps 1080p@30fps
Memory
Card slot No microSDXC (uses shared SIM slot)
Internal 64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM 128GB 8GB RAM
  UFS 2.1 UFS 2.1
Misc
Colors Black, Blue, White, Gold Cloud Blue, Blue Fog
Models M1803E1A V1945A, V1945T
SAR 0.70 W/kg (head)     1.66 W/kg (body)     -
SAR EU 1.01 W/kg (head)     1.32 W/kg (body)     -
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 34, 38, 39, 40, 41 1, 3, 5, 7, 8, 20, 28, 38, 40, 41
Speed HSPA 42.2/5.76 Mbps, LTE (4CA) Cat16 1024/150 Mbps HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/150 Mbps
Technology GSM / CDMA / HSPA / LTE GSM / HSPA / LTE
  CDMA 800 & TD-SCDMA -
Our Tests
Audio quality Noise -93.9dB / Crosstalk -93.7dB -
Battery (old) Endurance rating 86h -
Camera Photo / Video -
Display Contrast ratio: Infinite (nominal), 4.086 (sunlight) -
Loudspeaker -29.1 LUFS (Average) -
Performance AnTuTu: 217298 (v7), 341687 (v8) GeekBench: 8494 (v4.4), 2002 (v5.1) GFXBench: 33fps (ES 3.1 onscreen) -
Platform
Chipset Qualcomm SDM845 Snapdragon 845 (10 nm) Qualcomm SDM665 Snapdragon 665 (11 nm)
CPU Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.8 GHz Kryo 385 Silver) Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU Adreno 630 Adreno 610
OS Android 8.1 (Oreo), upgradable to Android 10, MIUI 12 Android 9.0 (Pie), Funtouch 9.2
Selfie camera
Features - HDR
Single 20 MP, f/2.0, (wide), 1/3", 0.9µm 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack No Yes
Loudspeaker Yes Yes