Product
Vivo X20
Vivo X20
Xiaomi Mi Note 10
Xiaomi Mi Note 10
Battery
Charging - 30W wired, PD, 58% in 30 min, 100% in 65 min
Type Li-Ion 3250 mAh, non-removable Li-Po 5260 mAh, non-removable
Body
Build Glass front, aluminum back, aluminum frame Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
Dimensions 155.9 x 75.2 x 7.2 mm (6.14 x 2.96 x 0.28 in) 157.8 x 74.2 x 9.7 mm (6.21 x 2.92 x 0.38 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 159 g (5.61 oz) 208 g (7.34 oz)
Comms
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE, aptX HD
Infrared port - Yes
NFC No Yes
Positioning GPS GPS, GLONASS, GALILEO, BDS
Radio No FM radio, recording
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
Protection - Corning Gorilla Glass 5
Resolution 1080 x 2160 pixels, 18:9 ratio (~402 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~398 ppi density)
Size 6.01 inches, 93.2 cm2 (~79.5% screen-to-body ratio) 6.47 inches, 102.8 cm2 (~87.8% screen-to-body ratio)
Type Super AMOLED AMOLED, HDR10, 600 nits (typ)
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Launch
Announced 2017, September. Released 2017, October 2019, November 06. Released 2019, November 11
Status Discontinued Discontinued
Main Camera
Dual 12 MP, f/1.8, AF 5 MP, f/2.4, (depth) -
Features LED flash, HDR, panorama Laser AF, Quad-LED dual-tone flash, HDR
Five - 108 MP (7P lens), f/1.7, 25mm (wide), 1/1.33", 0.8µm, PDAF, OIS 12 MP, f/2.0, 50mm (telephoto), 1/2.55", 1.4µm, dual pixel PDAF, 2x optical zoom 8 MP, f/2.0, (telephoto), 1.0µm, PDAF, OIS, 3.7x optical zoom, 5x hybrid zoom 20 MP, f/2.2, 13mm (ultrawide), 1/2.8", 1.0µm 2 MP, f/2.4, (macro)
Video 1080p@30fps 4K@30fps, 1080p@30/60/120/240fps, 720p@960fps
Memory
Card slot microSDXC (uses shared SIM slot) No
Internal 64GB 4GB RAM 128GB 6GB RAM, 256GB 6GB RAM
  eMMC 5.1 UFS 2.0
Misc
Colors Matte Black, Black/Gold, Gold, Rose gold, Blue, Pink Aurora Green, Glacier White, Midnight Black
Models X20A, 1721 M1910F4G
SAR - 1.19 W/kg (head)     1.18 W/kg (body)    
SAR EU - 1.11 W/kg (head)     1.39 W/kg (body)    
Network
2G bands GSM 900 / 1800 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100 HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 2, 3, 5, 7, 8, 34, 38, 39, 40, 41 1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28, 38, 40
Speed HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps HSPA 42.2/5.76 Mbps, LTE (3CA) Cat15 800/150 Mbps
Technology GSM / CDMA / HSPA / LTE GSM / HSPA / LTE
  1, 2, 3, 4, 5, 8, - X20A -
Our Tests
Audio quality - Noise -92.3dB / Crosstalk -89.7dB
Battery (old) - Endurance rating 95h
Camera - Photo / Video
Display - Contrast ratio: Infinite (nominal)
Loudspeaker - -29.6 LUFS (Average)
Performance - AnTuTu: 213566 (v7), 256717 (v8) GeekBench: 6737 (v4.4) GFXBench: 15fps (ES 3.1 onscreen)
Platform
Chipset Qualcomm SDM660 Snapdragon 660 (14 nm) Qualcomm SDM730 Snapdragon 730G (8 nm)
CPU Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)
GPU Adreno 512 Adreno 618
OS Android 7.1.1 (Nougat), upgradable to Android 8.0 (Oreo), Funtouch 3.2 Android 9.0 (Pie), upgradable to Android 11, MIUI 12
Selfie camera
Features - HDR
Single 12 MP, f/2.0, (wide), 1/2.8", 1.28µm 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
Video 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
  32-bit/192kHz audio 24-bit/192kHz Hi-Res audio