Product
OnePlus 9 Pro
OnePlus 9 Pro
Xiaomi Mi 9T
Xiaomi Mi 9T
Battery
Charging 65W wired, PD, 100% in 29 min 50W wireless, 100% in 43 min 5W reverse wireless 18W wired
Type Li-Po 4500 mAh Li-Po 4000 mAh, non-removable
Body
Build Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame Glass front (Gorilla Glass 5), glass back, aluminum frame
Dimensions 163.2 x 73.6 x 8.7 mm (6.43 x 2.90 x 0.34 in) 156.7 x 74.3 x 8.8 mm (6.17 x 2.93 x 0.35 in)
SIM Nano-SIMNano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 197 g (6.95 oz) 191 g (6.74 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, LE, aptX HD
NFC Yes Yes
Positioning GPS (L1+L5), GLONASS (G1), BDS (B1), GALILEO (E1+E5a) GPS, GLONASS, GALILEO, BDS
Radio No FM radio
USB USB Type-C 3.1, OTG USB Type-C 2.0, OTG
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 (~86.1% screen-to-body ratio)
Type LTPO Fluid2 AMOLED, 1B colors, 120Hz, HDR10+, 1300 nits (peak) AMOLED, HDR
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Launch
Announced 2021, March 23 2019, June 12. Released 2019, June 12
Status Available. Released 2021, March 30 Discontinued
Main Camera
Features Laser AF, color spectrum sensor, Hasselblad Color Calibration, dual-LED flash, HDR, panorama Dual-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) -
Triple - 48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.4, 53mm (telephoto), 1/4.0", 1.12µm, PDAF, 2x optical zoom 13 MP, f/2.4, 12mm (ultrawide), 1/3.1", 1.12µm
Video 8K@30fps, 4K@30/60/120fps, 1080p@30/60/240fps, Auto HDR, gyro-EIS 4K@30fps, 1080p@30/120/240fps, 1080p@960fps
Memory
Card slot No No
Internal 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM 64GB 6GB RAM, 128GB 6GB RAM, 256GB 8GB RAM
  UFS 3.1 UFS 2.0
Misc
Colors Morning Mist, Forest Green, Stellar Black Carbon black, Red flame, Glacier blue
Models LE2121, LE2125, LE2123, LE2120, LE2127 M1903F10G
SAR - 1.19 W/kg (head)     1.18 W/kg (body)    
SAR EU - 1.34 W/kg (head)     1.51 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 850 / 900 / 1700(AWS) / 1900 / 2100
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, 20, 28, 38, 40
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 / HSPA / LTE
  1, 3, 28, 41, 78, 79 SA/NSA - CN -
Our Tests
Audio quality - Noise -93.5dB / Crosstalk -93.8dB
Battery (old) Endurance rating 86h Endurance rating 100h
Camera Photo / Video Photo / Video
Display 859 nits max brightness (measured) 646 nits max brightness (measured)
Loudspeaker -24.1 LUFS (Very good) -25.3 LUFS (Very good)
Performance - AnTuTu: 211915 (v7), 257146 (v8) GeekBench: 6863 (v4.4), 1703 (v5.1) GFXBench: 13fps (ES 3.1 onscreen)
Platform
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) Qualcomm SDM730 Snapdragon 730 (8 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55 Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)
GPU Adreno 660 Adreno 618
OS Android 11, upgradable to Android 14, OxygenOS 14 Android 9.0 (Pie), upgradable to Android 11, MIUI 12.1
Selfie camera
Features HDR HDR
Single 16 MP, f/2.4, (wide), 1/3.06", 1.0µm Motorized pop-up 20 MP, f/2.2, (wide), 1/3.4", 0.8µm
Video 1080p@30fps, gyro-EIS 1080p@30fps
Sound
3.5mm jack No Yes
Loudspeaker Yes, with stereo speakers Yes
  24-bit/192kHz Hi-Res audio 24-bit/192kHz Hi-Res audio