Product
OnePlus 9 Pro
OnePlus 9 Pro
Xiaomi Mi Mix 3
Xiaomi Mi Mix 3
Battery
Charging 65W wired, PD, 100% in 29 min 50W wireless, 100% in 43 min 5W reverse wireless 18W wired, QC4 10W wireless
Type Li-Po 4500 mAh Li-Po 3200 mAh, non-removable
Body
Build Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame Glass front, ceramic back, aluminum frame (7000 series)
Dimensions 163.2 x 73.6 x 8.7 mm (6.43 x 2.90 x 0.34 in) 157.9 x 74.7 x 8.5 mm (6.22 x 2.94 x 0.33 in)
SIM Nano-SIMNano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 197 g (6.95 oz) 218 g (7.69 oz)
  IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) -
Comms
Bluetooth 5.2, A2DP, LE, aptX HD 5.0, A2DP, aptX HD, LE
NFC Yes Yes
Positioning GPS (L1+L5), GLONASS (G1), BDS (B1), GALILEO (E1+E5a) GPS (L1+L5), GLONASS (L1), BDS (B1), GALILEO (E1+E5a), QZSS (L1+L5)
Radio No No
USB USB Type-C 3.1, OTG USB Type-C
WLAN Wi-Fi 802.11 a/b/g/n/ac/6, 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 Corning Gorilla Glass 5
Resolution 1440 x 3216 pixels, 20:9 ratio (~525 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
Size 6.7 inches, 108.4 cm2 (~90.3% screen-to-body ratio) 6.39 inches, 100.2 cm2 (~85.0% screen-to-body ratio)
Type LTPO Fluid2 AMOLED, 1B colors, 120Hz, HDR10+, 1300 nits (peak) Super AMOLED, HDR
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass Fingerprint (rear-mounted), accelerometer, gyro, compass
  - Virtual proximity sensing
Launch
Announced 2021, March 23 2018, October. Released 2018, November
Status Available. Released 2021, March 30 Discontinued
Main Camera
Dual - 12 MP (wide), f/1.8, 1/2.55", 1.4µm, dual pixel PDAF, 4-axis OIS 12 MP (telephoto), 1/3.4", 1.0µm
Features Laser AF, color spectrum sensor, Hasselblad Color Calibration, dual-LED flash, HDR, panorama LED flash, HDR, panorama
Quad 48 MP, f/1.8, 23mm (wide), 1/1.43", 1.12µm, multi-directional PDAF, OIS 8 MP, f/2.4, 77mm (telephoto), 1.0µm, PDAF, OIS, 3.3x optical zoom 50 MP, f/2.2, 14mm (ultrawide), 1/1.56", 1.0µm, AF 2 MP, f/2.4, (monochrome) -
Video 8K@30fps, 4K@30/60/120fps, 1080p@30/60/240fps, Auto HDR, gyro-EIS 4K@30/60fps, 1080p@30/60fps, 1080p@960fps
Memory
Card slot No No
Internal 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 10GB RAM
  UFS 3.1 UFS 2.1
Misc
Colors Morning Mist, Forest Green, Stellar Black Jade Green, Sapphire Blue, Onyx Black, Forbidden City Blue
Models LE2121, LE2125, LE2123, LE2120, LE2127 M1810E5A
SAR - 1.45 W/kg (head)     1.57 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100 HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100 - Global
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - EU 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 34, 38, 39, 40, 41, 66 - Global
5G bands 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 78 SA/NSA - EU -
Speed HSPA 42.2/5.76 Mbps, LTE (CA) Cat20 2000/200 Mbps, 5G HSPA, LTE
Technology GSM / CDMA / HSPA / LTE / 5G GSM / CDMA / HSPA / EVDO / LTE
  1, 3, 28, 41, 78, 79 SA/NSA - CN 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 34, 38, 39, 40, 41 - China
Our Tests
Audio quality - Noise -93.2dB / Crosstalk -90.6dB
Battery (old) Endurance rating 86h Endurance rating 84h
Camera Photo / Video Photo / Video
Display 859 nits max brightness (measured) Contrast ratio: Infinite (nominal), 4.291(sunlight)
Loudspeaker -24.1 LUFS (Very good) -29.9 LUFS (Average)
Performance - AnTuTu: 292353 (v7), 352130 (v8) GeekBench: 9065 (v4.4), 2170 (v5.1) GFXBench: 30fps (ES 3.1 onscreen)
Platform
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) Qualcomm SDM845 Snapdragon 845 (10 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55 Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver)
GPU Adreno 660 Adreno 630
OS Android 11, upgradable to Android 14, OxygenOS 14 Android 9.0 (Pie), upgradable to Android 10, MIUI 12
Selfie camera
Dual - Manual pop-up 24 MP, f/2.0, 26mm (wide), 1/2.8", 0.9µm Manual pop-up 2 MP, depth sensor
Features HDR LED flash, HDR
Single 16 MP, f/2.4, (wide), 1/3.06", 1.0µm -
Video 1080p@30fps, gyro-EIS 1080p@30fps
Sound
3.5mm jack No No
Loudspeaker Yes, with stereo speakers Yes
  24-bit/192kHz Hi-Res audio -