In depth comparison and review of OnePlus 8 and Xiaomi Redmi Note 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.
| DESIGN AND DIMENSIONS | OnePlus 8 | Xiaomi Redmi Note 9 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 160.2 mm | 162.3 mm | Xiaomi Redmi Note 9 has greater height than OnePlus 8. |
| Width | 72.9 mm | 77.2 mm | Xiaomi Redmi Note 9 has greater width than OnePlus 8. |
| Depth | 8 mm | 8.9 mm | OnePlus 8 is narrower than OnePlus 8. |
| Weight | 180 g | 199 g | OnePlus 8 is lighter than OnePlus 8. |
| Body Colour | Black | Onyx black | Glacial green | Forest green | |
| Protection | - | Splashproof | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 0.86 W/kg | 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 | USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
|
| 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 | OnePlus 8 | Xiaomi Redmi Note 9 |
|---|
| Display Type | OLED display | - | |
|---|---|---|---|
| Display Technology | Fluid Amoled | - | |
| Screen Size (Display Size) | 6.55" | 6.53" | OnePlus 8 has larger screen size than Xiaomi Redmi Note 9. |
| Screen Resolution (Display Resolution) | 2400 x 1080 pixels | 2340 x 1080 pixels | OnePlus 8 has better screen resolution than Xiaomi Redmi Note 9. |
| Display Format | QHD+ | Full HD+ | |
| Pixel Density | 402 ppi | - | |
| Aspect Ratio | 20:9 | 19.5:9 | |
| Max Brightness | - | 450 cd/m² | |
| Colour Depth | 16.7 million colours | - | |
| Contrast Ratio | - | 1500:1 | |
| HDR | Yes | - | OnePlus 8 has HDR. |
| HDR Technology | HDR10+ | - | |
| Display Features | Reading mode, night mode, Wide colour display (P3), 90 Hz Fluid Display | Reading mode 2.0, Dot Display, Full Screen gestures | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 3D (scratch resistant glass) | Corning Gorilla Glass 5 (scratch resistant glass) |
| PROCESSOR | OnePlus 8 | Xiaomi Redmi Note 9 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 865 | MediaTek Helio G85 | |
|---|---|---|---|
| Clock Speed | 2.84 GHz | 2 GHz | OnePlus 8 has higher clock speed than Xiaomi Redmi Note 9. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | - | OnePlus 8 has 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 650 | ARM G52 MC2 |
| MEMORY | OnePlus 8 | Xiaomi Redmi Note 9 |
|---|
| RAM | LPDDR4X SDRAM - 8 GB | 3 GB | OnePlus 8 has more RAM than Xiaomi Redmi Note 9. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 64 GB | OnePlus 8 has more internal memory than Xiaomi Redmi Note 9. |
| User Memory | 100 GB | - | |
| Memory Interface | UFS 3.0 | - | |
| Supported Flash Memory Cards (Expandable Memory) | - | microSD |
| CAMERA | OnePlus 8 | Xiaomi Redmi Note 9 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 4 | |
|---|---|---|---|
| Sensor Resolution | 48 Megapixel | 48 Megapixel | Both phones have the same camera resolution. |
| Sensor Size | 1/1.4" | 1/2" | Xiaomi Redmi Note 9 has better camera sensor size than OnePlus 8. |
| Sensor Name | Sony Exmor RS IMX586 sensor | - | |
| Lens Aperture | F/1.75 | F/1.79 | OnePlus 8 has better lens aperture than OnePlus 8. |
| Lens Construction | 6-element | 6-element | |
| Field of View (FoV) | - | 79.4 degree(s) | |
| Pixel Size | 0.8 μm | 0.8 μm | Both phones have the same camera pixel size. |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | OnePlus 8 has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | Yes | - | |
| Special Effects | Portrait, HDR, Studio | HDR, Kaleidoscope | |
| Camera Modes | Panorama, Time-lapse mode, Pro mode, night mode, portrait mode, Cine Video Mode, Dog, Cat, Nightscape capture mode, Portrait, Ultra shot | Burst mode, Panorama, night mode, Smart ultra-wide angle mode, Photo timer, Custom watermark, Documents, Beautify, Levelling, Cinematic portraits | |
| Face Recognition (Face ID) | Face detection | Face recognition | Both phones have face detection. |
| Light Source | Dual LED flash | Flash | |
| Video Resolutions | 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 | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1280 x 720 (720p) at 120 fps | |
| Camera Features (Functions) | Noise reduction, GIF animation function, Phase Detect Auto-Focus (PDAF), Electronic Image Stabiliser (EIS), Continuous Auto Focus (CAF), RAW image capture, AI scene detection, UltraShot engine | 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 |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 2 Megapixel | 8 Megapixel | Xiaomi Redmi Note 9 has better second camera resolution than OnePlus 8. |
|---|---|---|---|
| Sensor Size (2nd Camera) | - | 1/4" | |
| Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.4 | F/2.2 | Xiaomi Redmi Note 9 has better second camera lens aperture than OnePlus 8. |
| Lens Element Qty (2nd Camera) | - | 5-element | |
| Field of View (2nd Camera) | - | 118 degree(s) | |
| Pixel Size (2nd Camera) | 1.75 μm | 1.2 μm | OnePlus 8 has larger second camera pixel size than Xiaomi Redmi Note 9. |
| Camera Features (2nd Camera) | - | 5-piece lens |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 16 Megapixel | 2 Megapixel | OnePlus 8 has higher resolution third camera than Xiaomi Redmi Note 9. |
|---|---|---|---|
| Lens Type (3rd Camera) | Ultra wide-angle lens | - | |
| Lens Aperture (3rd Camera) | F/2.2 | F/2.4 | OnePlus 8 has better third camera lens aperture than OnePlus 8. |
| Field of View (3rd Camera) | 116 degree(s) | - | |
| Pixel Size (3rd Camera) | - | 1.75 μm | |
| Camera Functions (3rd Camera) | - | Macro camera | |
| 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) | 16 Megapixel | 13 Megapixel | OnePlus 8 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/2.45 | F/2.25 | Xiaomi Redmi Note 9 has better front lens aperture than OnePlus 8. |
| Lens Element Qty (Front) | - | 5-element | |
| Field of View (Front) | - | 74 degree(s) | |
| Pixel Size (Front) | 1 μm | 1.12 μm | Xiaomi Redmi Note 9 has larger front camera pixel size than OnePlus 8. |
| Focus Adjustment | Focus free | - | |
| Special Effects (Front) | HDR, face retouch | HDR | |
| Camera Modes (Front) | Time-lapse mode | Panoramic selfies, AI portrait mode, AI Beautify | |
| 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) | Electronic Image Stabiliser (EIS) | Palm shutter, AI silhouette detection |
| BATTERY AND CHARGING | OnePlus 8 | Xiaomi Redmi Note 9 |
|---|
| Battery Capacity (Battery Size) | 4300 mAh | 5020 mAh | Xiaomi Redmi Note 9 has larger battery capacity than OnePlus 8. |
|---|---|---|---|
| Fast Charging Technology | Warp Charge 30 technology, Warp Charge 30T technology | - | OnePlus 8 has fast charging technology. |
| Talk Time | 1740 minutes | 1980 minutes | Xiaomi Redmi Note 9 has longer battery life when making calls than OnePlus 8. |
| Run Time Details | Talk: up to 1740 min Standby: up to 391 hrs |
Talk: up to 1980 min Gaming: up to 16 hrs Playback (Music): up to 147 hrs Navigation: up to 16 hrs |
|
| Battery Technology | Lithium Ion | Lithium polymer |
| CELLULAR | OnePlus 8 | Xiaomi Redmi Note 9 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 5G | 4G | OnePlus 8 has more advanced generation mobile network. |
| Operating System | OxygenOS (based on Android 10) | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo | GPS, A-GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | OnePlus 8 | Xiaomi Redmi Note 9 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE, LTE Advanced, FDD-LTE, TDD-LTE, 5G NR FR1 | VoLTE, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1900 GSM, 2100 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 4, Band 5, Band 8, Band 9, Band 19 | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900, 1700, 800 | 2100, 1900, 1700, 850, 900 | |
| 4G LTE Band | 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 34, Band 38, Band 39, Band 40, Band 41, Band 42, Band 46, Band 66 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41 | |
| 4G LTE Frequency | 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 2000, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 3500, TDD 5150, FDD 1700 - 2110 AWS-3 | 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 | |
| 5G NR Band | N1, n3, n7, n28, n78 | - | |
| 5G NR Frequency | FDD 2100, FDD 1800, FDD 2600, FDD 700APT, TDD TD 3500 | - | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac, IEEE 802.11a/b/g/n/ac/ax | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.1 | Bluetooth 5.0 | |
| NFC | Yes | - | OnePlus 8 has NFC reader for mobile payments. |
| Modem | Snapdragon X55 5G | - | |
| Messaging Services | SMS, MMS | - |
| MEDIA | OnePlus 8 | Xiaomi Redmi Note 9 |
|---|
| Supported Digital Audio Standards | WAV, WMA, AAC, MP3, FLAC, AC-3, AAC +, OGG, APE (Monkey's Audio), M4A, apt-X, LDAC, IMY, EAC3, MID, AMR-WB, AMR-NB, SBC, apt-X HD, EAC3-JOC, AC-4 | WAV, AAC, AMR, MP3, FLAC, APE (Monkey's Audio) | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, MOV, WMV, 3GP, TS, WebM, H.265 HEVC, MP4 | MKV, XviD, M4V, MP4 | |
| Sound Enhancements | Qualcomm aptX audio, Qualcomm aptX HD audio, Dolby Atmos Surround Sound | - | |
| Audio Amplifier | - | Smart PA |
| FEATURES | OnePlus 8 | Xiaomi Redmi Note 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 | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, infrared (IR) sensor | |
| Security Devices | Fingerprint reader (under display), face recognition | Face recognition, fingerprint reader | |
| Additional Phone Features | Face Unlock, Noise Cancellation Technology, MIMO technology, Alert Slider | Infrared remote control, HyperEngine technology |
| OTHERS | OnePlus 8 | Xiaomi Redmi Note 9 |
|---|
| Included Accessories | SIM card removal tool, sticker, screen protector, USB-C cable, protective case, Warp Charge 30 power adapter | Protective cover, power adapter, SIM card removal tool, USB-C cable | |
|---|---|---|---|
| Compliant Standards | - | TUV Rheinland Low Blue Light Certification |
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