Product
Xiaomi Mi 9
Xiaomi Mi 9
Vivo X50
Vivo X50
Battery
Charging 27W wired, QC4 20W wireless 33W wired
Type Li-Po 3300 mAh, non-removable 4200 mAh
Body
Build Glass front (Gorilla Glass 6), glass back (Gorilla Glass 5), aluminum frame Glass front, glass back, aluminum frame
Dimensions 157.5 x 74.7 x 7.6 mm (6.20 x 2.94 x 0.30 in) 159.5 x 75.4 x 7.6 mm (6.28 x 2.97 x 0.30 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 173 g (6.10 oz) 173 g (6.10 oz)
Comms
Bluetooth 5.0, A2DP, LE, aptX HD 5.1, A2DP, LE, aptX HD
Infrared port Yes -
NFC Yes Yes
Positioning GPS (L1+L5), GLONASS (L1), BDS (B1), GALILEO (E1+E5a), QZSS (L1+L5) GPS, GLONASS, GALILEO, BDS
Radio No No
USB USB Type-C 2.0, OTG USB Type-C, 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 6 -
Resolution 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density) 1080 x 2376 pixels (~398 ppi density)
Size 6.39 inches, 100.2 cm2 (~85.2% screen-to-body ratio) 6.56 inches, 104.6 cm2 (~87.0% screen-to-body ratio)
Type Super AMOLED, HDR10 AMOLED, 90Hz, HDR10+
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, compass Fingerprint (under display, optical), accelerometer, gyro, compass
  Virtual proximity sensing Virtual proximity sensing
Launch
Announced 2019, February 20. Released 2019, March 25 2020, July 07
Status Discontinued Available. Released 2020, July 16
Main Camera
Features Laser AF, Dual-LED flash, HDR, panorama Color spectrum sensor, Dual-LED dual-tone flash, HDR, panorama
Quad - 48 MP, f/1.6, (wide), PDAF, OIS 13 MP, f/2.5, 50mm (telephoto), 1/2.8", 0.8µm, PDAF, 2x optical zoom 8 MP, f/2.2, 120˚, 16mm (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.5, (macro)
Triple 48 MP, f/1.8, 27mm (wide), 1/2.0", 0.8µm, PDAF 12 MP, f/2.2, 54mm (telephoto), 1/3.6", 1.0µm, PDAF, 2x optical zoom 16 MP, f/2.2, 13mm (ultrawide), 1/3.0", 1.0µm, PDAF -
Video 4K@30/60fps, 1080p@30/120/240fps, 1080p@960fps 4K@30fps, 1080p@30fps, gyro-EIS
Memory
Card slot No No
Internal 64GB 6GB RAM, 64GB 8GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM 128GB 8GB RAM, 256GB 8GB RAM
  UFS 2.1 UFS 2.1
Misc
Colors Lavender Violet, Ocean Blue, Piano Black Glaze Black, Frost Blue
Models M1902F1G 2004
SAR 0.99 W/kg (head)     1.04 W/kg (body)     -
SAR EU 1.39 W/kg (head)     1.30 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 900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 20, 28, 38, 39, 40 - Global 1, 3, 5, 8, 40
Speed HSPA 42.2/5.76 Mbps, LTE (5CA) Cat18 1200/150 Mbps HSPA, LTE
Technology GSM / CDMA / HSPA / LTE GSM / HSPA / LTE
  1, 2, 3, 4, 5, 7, 8, 12, 17, 34, 38, 39, 40, 41 - China -
Our Tests
Audio quality Noise -93.9dB / Crosstalk -91.9dB -
Battery (old) Endurance rating 95h -
Camera Photo / Video -
Display Contrast ratio: Infinite (nominal), 3.921 (sunlight) -
Loudspeaker Voice 70dB / Noise 74dB / Ring 81dB -
Performance AnTuTu: 372006 (v7) GeekBench: 11181 (v4.4) GFXBench: 35fps (ES 3.1 onscreen) -
Platform
Chipset Qualcomm SM8150 Snapdragon 855 (7 nm) Qualcomm SDM730 Snapdragon 730 (8 nm)
CPU Octa-core (1x2.84 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485) Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)
GPU Adreno 640 Adreno 618
OS Android 9.0 (Pie), upgradable to Android 10, MIUI 12.5 Android 10, Funtouch 10.5
Selfie camera
Features HDR HDR
Single 20 MP, f/2.0, (wide), 1/3", 0.9µm 32 MP, f/2.5, 26mm (wide), 1/2.8", 0.8µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack No No
Loudspeaker Yes Yes
  - 24-bit/192kHz Hi-Res audio