In depth comparison and review of OnePlus 7 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 7 | Xiaomi Redmi Note 9 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 157.7 mm | 162.3 mm | Xiaomi Redmi Note 9 has greater height than OnePlus 7. |
| Width | 74.8 mm | 77.2 mm | Xiaomi Redmi Note 9 has greater width than OnePlus 7. |
| Depth | 8.2 mm | 8.9 mm | OnePlus 7 is narrower than OnePlus 7. |
| Weight | 182 g | 199 g | OnePlus 7 is lighter than OnePlus 7. |
| Body Colour | Mirror grey | Forest green | |
| Body Material | 3D glass | - | |
| 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 | 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 7 | Xiaomi Redmi Note 9 |
|---|
| Display Type | OLED display | - | |
|---|---|---|---|
| Display Technology | Optic AMOLED | - | |
| Screen Size (Display Size) | 6.41" | 6.53" | Xiaomi Redmi Note 9 has larger screen size than OnePlus 7. |
| Screen Resolution (Display Resolution) | 2340 x 1080 pixels | 2340 x 1080 pixels | Both phones have the same screen resolution. |
| Display Format | - | Full HD+ | |
| Pixel Density | 402 ppi | - | |
| Aspect Ratio | 19.5:9 | 19.5:9 | |
| Max Brightness | - | 450 cd/m² | |
| Contrast Ratio | - | 1500:1 | |
| Display Features | 2.5D Glass, Reading mode, night mode, DCI-P3 Wide colour gamut, Video Enhancer | Reading mode 2.0, Dot Display, Full Screen gestures | |
| Display Protection (Screen Protector) | Corning Gorilla Glass (scratch resistant glass) | Corning Gorilla Glass 5 (scratch resistant glass) |
| PROCESSOR | OnePlus 7 | Xiaomi Redmi Note 9 |
|---|
| Processor Type (CPU) | Snapdragon 855 | MediaTek Helio G85 | |
|---|---|---|---|
| Clock Speed | 2.84 GHz | 2 GHz | OnePlus 7 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 7 has 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 640 | ARM G52 MC2 |
| MEMORY | OnePlus 7 | Xiaomi Redmi Note 9 |
|---|
| RAM | LPDDR4X SDRAM - 6 GB | 3 GB | OnePlus 7 has more RAM than Xiaomi Redmi Note 9. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 64 GB | OnePlus 7 has more internal memory than Xiaomi Redmi Note 9. |
| Memory Interface | UFS 3.0 | - | |
| Supported Flash Memory Cards (Expandable Memory) | - | microSD |
| CAMERA | OnePlus 7 | Xiaomi Redmi Note 9 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 2 | 4 | |
|---|---|---|---|
| Sensor Resolution | 48 Megapixel | 48 Megapixel | Both phones have the same camera resolution. |
| Sensor Size | - | 1/2" | |
| Sensor Name | Sony Exmor RS IMX586 sensor | - | |
| Lens Aperture | F/1.7 | F/1.79 | OnePlus 7 has better lens aperture than OnePlus 7. |
| Lens Construction | - | 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 7 has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Special Effects | HDR | HDR, Kaleidoscope | |
| Camera Modes | Panorama, Time-lapse mode, Pro mode, night mode, Portrait | Burst mode, Panorama, night mode, Smart ultra-wide angle mode, Photo timer, Custom watermark, Documents, Beautify, Levelling, Cinematic portraits | |
| Face Recognition (Face ID) | - | Face recognition | Xiaomi Redmi Note 9 has 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) | Phase Detect Auto-Focus (PDAF), Electronic Image Stabiliser (EIS), RAW image capture, AI scene detection, AI studio lighting | 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) | 5 Megapixel | 8 Megapixel | Xiaomi Redmi Note 9 has better second camera resolution than OnePlus 7. |
|---|---|---|---|
| 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 7. |
| Lens Element Qty (2nd Camera) | - | 5-element | |
| Field of View (2nd Camera) | - | 118 degree(s) | |
| Pixel Size (2nd Camera) | 1.12 μm | 1.2 μm | Xiaomi Redmi Note 9 has larger second camera pixel size than OnePlus 7. |
| Camera Features (2nd Camera) | - | 5-piece lens |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| 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 7 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/2.0 | F/2.25 | OnePlus 7 has better front lens aperture than OnePlus 7. |
| 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 7. |
| 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 | Face recognition | Both phones have 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 7 | Xiaomi Redmi Note 9 |
|---|
| Battery Capacity (Battery Size) | 3700 mAh | 5020 mAh | Xiaomi Redmi Note 9 has larger battery capacity than OnePlus 7. |
|---|---|---|---|
| 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 | OnePlus 7 | Xiaomi Redmi Note 9 |
|---|
| Technology | CDMA2000 1X / GSM / WCDMA (UMTS) / TD-SCDMA | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | OxygenOS (based on Android Pie) | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo, SBAS | GPS, A-GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | OnePlus 7 | Xiaomi Redmi Note 9 |
|---|
| Data Transmission | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | VoLTE, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X | 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 29, Band 32, Band 34, Band 38, Band 39, Band 40, Band 41, 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 700d, FDD 1500 L, TDD 2000, TDD 2600, TDD 1900, TDD 2300, TDD 2500, 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 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 | |
| NFC | Yes | - | OnePlus 7 has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | OnePlus 7 | Xiaomi Redmi Note 9 |
|---|
| Supported Digital Audio Standards | WAV, WMA, AAC, MP3, FLAC, AC-3, AAC +, OGG, APE (Monkey's Audio), M4A, IMY, EAC3, MID, AMR-WB, AMR-NB | 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 | Dolby Atmos sound technology | - | |
| Audio Amplifier | - | Smart PA |
| FEATURES | OnePlus 7 | 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, Fast Charging, AI Engine | Infrared remote control, HyperEngine technology |
| OTHERS | OnePlus 7 | Xiaomi Redmi Note 9 |
|---|
| Included Accessories | Power adapter, SIM card removal tool, sticker, USB-C cable, screen protector (pre-applied), protective case | Protective cover, power adapter, SIM card removal tool, USB-C cable | |
|---|---|---|---|
| Compliant Standards | - | TUV Rheinland Low Blue Light Certification |
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