In depth comparison and review of Xiaomi Redmi Note 4x and OPPO A9 2020. 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 | Xiaomi Redmi Note 4x | OPPO A9 2020 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | CPH1941 | |
| Form Factor | Touch | Touch | |
| Height | 151 mm | 163.6 mm | OPPO A9 2020 has greater height than Xiaomi Redmi Note 4x. |
| Width | 76 mm | 75.6 mm | Xiaomi Redmi Note 4x has greater width than OPPO A9 2020. |
| Depth | 8.45 mm | 9.1 mm | Xiaomi Redmi Note 4x is narrower than Xiaomi Redmi Note 4x. |
| Weight | 165 g | 195 g | Xiaomi Redmi Note 4x is lighter than Xiaomi Redmi Note 4x. |
| Body Colour | Platinum silver grey | Marine green | Space purple | |
| Body Material | Metal | 3D glass | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 0.674 W/kg (body), 0.724 W/kg (head) | 0.976 W/kg (body), 0.847 W/kg (head), 2.118 W/kg (limb) | |
| Connector Type | Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
USB Type-C - 24 pin USB-C Handset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Micro SIM, nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | Micro SIM + nano SIM/microSD | - |
| DISPLAY | Xiaomi Redmi Note 4x | OPPO A9 2020 |
|---|
| Display Type | - | LCD display | |
|---|---|---|---|
| Display Technology | - | TFT | |
| Screen Size (Display Size) | 5.5" | 6.5" | OPPO A9 2020 has larger screen size than Xiaomi Redmi Note 4x. |
| Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 1600 x 720 pixels | Xiaomi Redmi Note 4x has better screen resolution than OPPO A9 2020. |
| Display Format | Full HD | - | |
| Pixel Density | 403 ppi | 269 ppi | Xiaomi Redmi Note 4x has better pixel density than OPPO A9 2020. |
| Max Brightness | 450 cd/m² | 480 cd/m² | OPPO A9 2020 has better display brightness than Xiaomi Redmi Note 4x. |
| Colour Depth | - | 16.7 million colours | |
| Contrast Ratio | 1000:1 | 1500:1 | OPPO A9 2020 has better display contrast ratio than Xiaomi Redmi Note 4x. |
| Display Enhancement Technology | - | Blue light filter | |
| Display Features | 2.5D Glass, Eye protection mode, Colour temperature adjustment | In-Cell Display Technology, Sunlight screen |
| PROCESSOR | Xiaomi Redmi Note 4x | OPPO A9 2020 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 625 | Qualcomm Snapdragon 665 | |
|---|---|---|---|
| Clock Speed | 2 GHz | - | |
| Graphics System (GPU) | Qualcomm ADRENO 506 | Qualcomm ADRENO 610 |
| MEMORY | Xiaomi Redmi Note 4x | OPPO A9 2020 |
|---|
| RAM | 3 GB | LPDDR4X SDRAM - 4 GB | OPPO A9 2020 has more RAM than Xiaomi Redmi Note 4x. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 128 GB | OPPO A9 2020 has more internal memory than Xiaomi Redmi Note 4x. |
| Memory Interface | - | UFS 2.1 | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | microSDHC, microSDXC - up to 256 GB |
| CAMERA | Xiaomi Redmi Note 4x | OPPO A9 2020 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 4 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 48 Megapixel | OPPO A9 2020 has better camera resolution than Xiaomi Redmi Note 4x. |
| Sensor Size | - | 1/2.25" | |
| Sensor Type | - | CMOS | |
| Lens Aperture | F/2.0 | F/1.8 | OPPO A9 2020 has better lens aperture than Xiaomi Redmi Note 4x. |
| Lens Construction | 5-element | - | |
| Pixel Size | - | 0.8 μm | |
| Focus Adjustment | Automatic | Automatic | |
| Special Effects | HDR | - | |
| Camera Modes | Burst mode, Panorama, low-light shots | Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Portrait, Night, Ultra Night Mode 2.0 | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi Redmi Note 4x has face detection. |
| Light Source | Dual LED flash | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p), 1280 x 720 (720p), Slo-mo video 1280 x 720 (720p) at 120 fps | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 30 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF) | Electronic Image Stabiliser (EIS) |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 8 Megapixel | |
|---|---|---|---|
| Sensor Size (2nd Camera) | - | 1/4.0" | |
| Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | - | F/2.25 | |
| Field of View (2nd Camera) | - | 119 degree(s) | |
| Pixel Size (2nd Camera) | - | 1.12 μm |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Sensor Size (3rd Camera) | - | 1/5" | |
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Pixel Size (3rd Camera) | - | 1.75 μm |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Sensor Size (4th Camera) | - | 1/5" | |
| Lens Aperture (4th Camera) | - | F/2.4 | |
| Pixel Size (4th Camera) | - | 1.75 μm |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 5 Megapixel | 16 Megapixel | OPPO A9 2020 has better front camera resolution than Xiaomi Redmi Note 4x. |
| Sensor Size (Front) | - | 1/3.1" | |
| Lens Type (Front) | Wide-angle lens | - | |
| Lens Aperture (Front) | F/2.0 | F/2.0 | Both phones have the same front camera lens aperture. |
| Pixel Size (Front) | - | 1 μm | |
| Camera Modes (Front) | Real time beauty mode, Beautify with 36 smart beauty profiles | AI Beauty | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi Redmi Note 4x has face detection. |
| Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Front) | Selfie countdown | - |
| BATTERY AND CHARGING | Xiaomi Redmi Note 4x | OPPO A9 2020 |
|---|
| Battery Capacity (Battery Size) | 4100 mAh | 5000 mAh | OPPO A9 2020 has larger battery capacity than Xiaomi Redmi Note 4x. |
|---|---|---|---|
| Standby Time | 264 hours | 450 hours | OPPO A9 2020 has longer standby time than Xiaomi Redmi Note 4x. |
| Talk Time | 3060 minutes | 2700 minutes | Xiaomi Redmi Note 4x has longer battery life when making calls than OPPO A9 2020. |
| Run Time Details | Talk (2G): up to 3060 min Playback (video): up to 18 hrs Gaming: up to 15 hrs Standby (4G): up to 264 hrs Playback (audio): up to 162 hrs Reading: up to 22 hrs |
Standby: up to 450 hrs Talk: up to 2700 min |
| CELLULAR | Xiaomi Redmi Note 4x | OPPO A9 2020 |
|---|
| 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 | - | ColorOS 6.0.1 (based on Android 9) | |
| User Interface | MIUI 8 | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | Xiaomi Redmi Note 4x | OPPO A9 2020 |
|---|
| Data Transmission | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | - | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 5, Band 8 | Band 1, Band 2, Band 4, Band 5, Band 6, Band 8, Band 19 | |
| 3G UMTS Frequency | 2100, 1900, 850, 900 | 2100, 1900, 1700, 850, 800, 900, 800 | |
| 4G LTE Band | Band 1, Band 3, Band 5, Band 7, Band 38, Band 39, Band 40, Band 41 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 18, Band 19, Band 20, Band 26, Band 28, Band 38, Band 39, Band 40, Band 41 | |
| 4G LTE Frequency | FDD 2100, FDD 1800+, FDD 850, FDD 2600, TDD 2600, TDD 1900, TDD 2300, TDD 2500 | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 850+, FDD 700 APT, TDD 2600, TDD 1900, TDD 2300, TDD 2500 | |
| Wireless Interface | Infrared (IrDA), IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 4.2 | Bluetooth 5.0 | |
| Bluetooth Profiles | HID | - | |
| NFC | - | Yes | OPPO A9 2020 has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Xiaomi Redmi Note 4x | OPPO A9 2020 |
|---|
| Supported Digital Audio Standards | WAV, AAC, PCM, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), DSD, AMR-WB, AMR-NB | - | |
|---|---|---|---|
| Supported Digital Video Standards | VC-1, XviD, MPEG-4, H.264, M4V, HEVC, H.265, ASP | - | |
| Sound Enhancements | - | Dolby Atmos sound technology, Hi-Res audio |
| FEATURES | Xiaomi Redmi Note 4x | OPPO A9 2020 |
|---|
| 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, gyro sensor, hall sensor, distance sensor | Accelerometer, ambient light sensor, proximity sensor, gyro sensor, geomagnetic sensor | |
| Security Devices | - | Face recognition | |
| Additional Phone Features | Infrared remote control | Multitasking, Game Boost 2.0 |
| OTHERS | Xiaomi Redmi Note 4x | OPPO A9 2020 |
|---|
| Included Accessories | USB cable, power adapter, SIM card removal tool | Headphones, power adapter, SIM card removal tool, cover, USB-C cable, screen protector (pre-applied) |
|---|
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