Xiaomi Redmi Note 9 vs. OnePlus 9

Phone Comparison, Reviews and Tests

In depth comparison and review of Xiaomi Redmi Note 9 and OnePlus 9. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.

Phone Specifications Comparison

Xiaomi Redmi Note 9 vs. OnePlus 9 Comparison Chart
DESIGN AND DIMENSIONS Xiaomi Redmi Note 9 OnePlus 9
Product Type Smartphone Smartphone
Form Factor Touch Touch
Height 162.3 mm 160 mm Xiaomi Redmi Note 9 has greater height than OnePlus 9.
Width 77.2 mm 74.2 mm Xiaomi Redmi Note 9 has greater width than OnePlus 9.
Depth 8.9 mm 8.7 mm OnePlus 9 is narrower than Xiaomi Redmi Note 9.
Weight 199 g 192 g OnePlus 9 is lighter than Xiaomi Redmi Note 9.
Body Colour Forest green Astral black | Arctic sky
Protection Splashproof -
Waterproof (Water-resistant) - -
SAR Value 2.262 W/kg (limb), 1.138 W/kg (body), 0.795 W/kg (head) -
Integrated Components Ultra-linear speaker -
Connector Type USB Type-C - 24 pin USB-C
Headset jack - mini-phone 3.5mm
USB Type-C - 24 pin USB-C
SIM Card Type (Size) Nano SIM Nano SIM
SIM Card Qty Dual-SIM Dual-SIM
SIM Card Configuration Details Nano SIM + nano SIM/microSD -
DISPLAY Xiaomi Redmi Note 9 OnePlus 9
Display Type - OLED display
Display Technology - Fluid Amoled
Screen Size (Display Size) 6.53" 6.55" OnePlus 9 has larger screen size than Xiaomi Redmi Note 9.
Screen Resolution (Display Resolution) 2340 x 1080 pixels 2400 x 1080 pixels OnePlus 9 has better screen resolution than Xiaomi Redmi Note 9.
Display Format Full HD+ Full HD+
Pixel Density - 402 ppi
Aspect Ratio 19.5:9 20:9
Max Brightness 450 cd/m² 1100 cd/m² OnePlus 9 has better display brightness than Xiaomi Redmi Note 9.
Colour Depth - 16.7 million colours
Contrast Ratio 1500:1 -
HDR - Yes OnePlus 9 has HDR.
HDR Technology - HDR10+
Display Enhancement Technology - Vibrant Color Effect
Display Refresh Rate - 120 Hz
Display Features Reading mode 2.0, Dot Display, Full Screen gestures Always-on display, Reading mode, night mode, Wide colour display (P3), sRGB support
Display Protection (Screen Protector) Corning Gorilla Glass 5 (scratch resistant glass) Corning Gorilla Glass (scratch resistant glass)
PROCESSOR Xiaomi Redmi Note 9 OnePlus 9
Processor Type (CPU) MediaTek Helio G85 Qualcomm Snapdragon 888
Clock Speed 2 GHz -
Processor Core Qty 8-core 8-core Both phones have the same number of phone cores.
Graphics System (GPU) ARM G52 MC2 Qualcomm ADRENO 660
MEMORY Xiaomi Redmi Note 9 OnePlus 9
RAM 3 GB LPDDR5 SDRAM - 8 GB OnePlus 9 has more RAM than Xiaomi Redmi Note 9.
Internal Memory Size (Storage Capacity) 64 GB 128 GB OnePlus 9 has more internal memory than Xiaomi Redmi Note 9.
Memory Interface - UFS 3.1
Supported Flash Memory Cards (Expandable Memory) microSD -
CAMERA Xiaomi Redmi Note 9 OnePlus 9
MAIN CAMERA
Number of Main Cameras 4 3
Sensor Resolution 48 Megapixel 48 Megapixel Both phones have the same camera resolution.
Sensor Size 1/2" 1/1.43" Xiaomi Redmi Note 9 has better camera sensor size than OnePlus 9.
Sensor Name - Sony Exmor RS IMX689 sensor
Lens Aperture F/1.79 F/1.8 Xiaomi Redmi Note 9 has better lens aperture than Xiaomi Redmi Note 9.
Lens Construction 6-element 7-element
Field of View (FoV) 79.4 degree(s) -
Pixel Size 0.8 μm 1.12 μm OnePlus 9 has larger camera pixel size than Xiaomi Redmi Note 9.
Focus Adjustment Automatic Automatic
Laser Auto Focus - Yes
Minimum Focal Length (Focal Distance) - 23 mm
Special Effects HDR, Kaleidoscope HDR
Camera Modes Burst mode, Panorama, night mode, Smart ultra-wide angle mode, Photo timer, Custom watermark, Documents, Beautify, Levelling, Cinematic portraits Panorama, Time-lapse mode, Pro mode, HYPERLAPSE, Nightscape capture mode, Portrait, Filter mode, Super Macro, Portrait video, UltraShot HDR, Smart Scene Recognition, Tilt-shift mode, Focus Peaking, Cat/Dog Face Focus, Super Stable, Video Nightscape
Face Recognition (Face ID) Face recognition - Xiaomi Redmi Note 9 has face detection.
Light Source Flash Dual LED flash
Video Resolutions 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1280 x 720 (720p) at 120 fps 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 3840 x 2160 (4K) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1920 x 1080 (1080p) at 240 fps, Super slow motion video 1280 x 720 (720p) at 480 fps, 7680 x 4320 (8K) at 30fps
Camera Features (Functions) 4-in-1 Super Pixel, AI scene detection, Portrait mode with background blurring, Ultra wide-angle edge distortion correction, Steady handheld night photography, full screen frame, AI watermark Tracking Focus, Phase Detect Auto-Focus (PDAF), Continuous Auto Focus (CAF), RAW image capture, Dual Native ISO, 2x2 On-Chip Lens (OCL), Hasselblad Camera, Natural Color Calibration, 12-bit RAW
SECOND CAMERA
Sensor Resolution (2nd Camera) 8 Megapixel 50 Megapixel OnePlus 9 has better second camera resolution than Xiaomi Redmi Note 9.
Sensor Size (2nd Camera) 1/4" 1/1.56" Xiaomi Redmi Note 9 has better second camera sensor size than OnePlus 9.
Sensor Name (2nd Camera) - Sony Exmor RS IMX766 sensor
Lens Type (2nd Camera) Ultra wide-angle lens Ultra wide-angle lens
Lens Aperture (2nd Camera) F/2.2 F/2.2 Both phones have the same second camera lens aperture.
Lens Element Qty (2nd Camera) 5-element 7-element
Field of View (2nd Camera) 118 degree(s) 119 degree(s) OnePlus 9 has larger second camera lens field of view than Xiaomi Redmi Note 9.
Pixel Size (2nd Camera) 1.2 μm -
Minimum Focal Length (2nd Camera) - 14 mm
Camera Features (2nd Camera) 5-piece lens 2x2 On-Chip Lens (OCL), Freeform Lens
THIRD CAMERA
Sensor Resolution (3rd Camera) 2 Megapixel 2 Megapixel Both phones have the same third camera resolution.
Lens Aperture (3rd Camera) F/2.4 F/2.4 Both phones have the same lens aperture of the third camera.
Lens Element Qty (3rd Camera) - 3-element
Pixel Size (3rd Camera) 1.75 μm -
Camera Functions (3rd Camera) Macro camera Monochrome
Camera Features (3rd Camera) AF (2cm-10cm) -
FOURTH CAMERA
Sensor Resolution (4th Camera) 2 Megapixel -
Sensor Size (4th Camera) 1/5" -
Lens Aperture (4th Camera) F/2.4 -
Lens Element Qty (4th Camera) 3-element -
Pixel Size (4th Camera) 1.75 μm -
Camera Functions (4th Camera) Depth camera -
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 13 Megapixel 16 Megapixel OnePlus 9 has better front camera resolution than Xiaomi Redmi Note 9.
Sensor Size (Front) 1/3.06" -
Sensor Name (Front) - Sony Exmor RX IMX471 sensor
Lens Aperture (Front) F/2.25 F/2.4 Xiaomi Redmi Note 9 has better front lens aperture than Xiaomi Redmi Note 9.
Lens Element Qty (Front) 5-element -
Field of View (Front) 74 degree(s) -
Pixel Size (Front) 1.12 μm 1 μm Xiaomi Redmi Note 9 has larger front camera pixel size than OnePlus 9.
Focus Adjustment - Focus free
Special Effects (Front) HDR HDR, face retouch
Camera Modes (Front) Panoramic selfies, AI portrait mode, AI Beautify Time-lapse mode
Face Recognition (Face ID) Face recognition - Xiaomi Redmi Note 9 has face detection.
Light Source (Front) Display flash Display flash
Video Resolutions (Front) - 1920 x 1080 (1080p) at 30 fps
Camera Features (Front) Palm shutter, AI silhouette detection Electronic Image Stabiliser (EIS)
BATTERY AND CHARGING Xiaomi Redmi Note 9 OnePlus 9
Battery Capacity (Battery Size) 5020 mAh 4500 mAh Xiaomi Redmi Note 9 has larger battery capacity than OnePlus 9.
Fast Charging Technology - Qualcomm Quick Charge, Warp Charge 65T technology OnePlus 9 has fast charging technology.
Recharge Time (Charging Time) - 29 min
Wireless Charging - Yes OnePlus 9 can be charged wirelessly.
Wireless Charging Standards - Qi
Talk Time 1980 minutes -
Run Time Details Talk: up to 1980 min
Gaming: up to 16 hrs
Playback (Music): up to 147 hrs
Navigation: up to 16 hrs
-
Battery Technology Lithium polymer -
CELLULAR Xiaomi Redmi Note 9 OnePlus 9
Technology WCDMA (UMTS) / GSM WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G 5G OnePlus 9 has more advanced generation mobile network.
Operating System - OxygenOS (based on Android 11)
Navigation GPS, A-GPS, GLONASS, BeiDou, Galileo GPS, A-GPS, GLONASS, BeiDou, Galileo
COMMUNICATIONS Xiaomi Redmi Note 9 OnePlus 9
Data Transmission VoLTE, FDD-LTE, TDD-LTE FDD-LTE, TDD-LTE, 5G NR FR1
2G Band 850 GSM, 900 GSM, 1900 GSM, 2100 GSM 850 GSM, 900 GSM, 1800 GSM, 1900 GSM
3G UMTS Band Band 1, Band 2, Band 4, Band 5, Band 8 Band 1, Band 2, Band 4, Band 5, Band 8, Band 9, Band 19
3G UMTS Frequency 2100, 1900, 1700, 850, 900 2100, 1900, 1700, 850, 900, 1700, 800
4G LTE Band Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41 Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41, Band 66
4G LTE Frequency FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3
5G NR Band - N1, n3, n5, n7, n8, n20, n28, n38, n41, n66, n78, n40
5G NR Frequency - FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, FDD AWS-3, TDD TD 3500, TDD 2300
Wireless Interface IEEE 802.11a/b/g/n/ac IEEE 802.11a/b/g/n/ac/ax
Bluetooth Bluetooth 5.0 Bluetooth 5.2
NFC - Yes OnePlus 9 has NFC reader for mobile payments.
Modem - Snapdragon X55 5G
MEDIA Xiaomi Redmi Note 9 OnePlus 9
Supported Digital Audio Standards WAV, AAC, AMR, MP3, FLAC, APE (Monkey's Audio) WAV, WMA, AAC, MP3, FLAC, AC-3, AAC +, OGG, APE (Monkey's Audio), M4A, LDAC, IMY, EAC3, MID, AMR-WB, AMR-NB, EAC3-JOC, AC-4
Supported Digital Video Standards MKV, XviD, M4V, MP4 MKV, FLV, AVI, MOV, WMV, 3GP, TS, WebM, H.265 HEVC, MP4
Sound Enhancements - Qualcomm aptX audio, Qualcomm aptX HD audio, Dolby Atmos Surround Sound
Audio Amplifier Smart PA -
FEATURES Xiaomi Redmi Note 9 OnePlus 9
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert
Sensors Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, infrared (IR) sensor Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, flicker sensor, sensor core
Security Devices Face recognition, fingerprint reader Fingerprint reader (under display), face recognition
Additional Phone Features Infrared remote control, HyperEngine technology Noise Cancellation Technology, MIMO technology, Gesture Controls, OnePlus Switch, Alert Slider, dual stereo speakers, Zen mode 2.0, OnePlus Games
OTHERS Xiaomi Redmi Note 9 OnePlus 9
Included Accessories Protective cover, power adapter, SIM card removal tool, USB-C cable SIM card removal tool, sticker, screen protector, USB-C to USB-C cable, protective case, Warp Charge 65 power adapter
Compliant Standards TUV Rheinland Low Blue Light Certification SGS
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