In depth comparison and review of Xiaomi Redmi 9A and OPPO Reno4 5G. 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 9A | OPPO Reno4 5G |
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Product Type | Smartphone | Smartphone | |
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Manufacturer Model Number | - | CPH2091 | |
Form Factor | Touch | Touch | |
Height | 164.9 mm | 159.3 mm | Xiaomi Redmi 9A has greater height than OPPO Reno4 5G. |
Width | 77.07 mm | 74 mm | Xiaomi Redmi 9A has greater width than OPPO Reno4 5G. |
Depth | 9 mm | 7.8 mm | OPPO Reno4 5G is narrower than Xiaomi Redmi 9A. |
Weight | 196 g | 183 g | OPPO Reno4 5G is lighter than Xiaomi Redmi 9A. |
Body Colour | Sky blue | Granite grey | Space black | Galactic blue | |
Waterproof (Water-resistant) | - | - | |
IP rating | - | IP54 | |
SAR Value | 0.398 W/kg (head), 1.186 W/kg (body), 2.526 W/kg (limb) | 0.886 W/kg (head), 1.155 W/kg (body), 2.165 W/kg (limb) | |
Integrated Components | FM radio | - | |
Connector Type | Micro-USB - 5 pin Micro-USB Type B 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 |
DISPLAY | Xiaomi Redmi 9A | OPPO Reno4 5G |
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Display Type | - | OLED display | |
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Display Technology | - | AMOLED | |
Screen Size (Display Size) | 6.53" | 6.4" | Xiaomi Redmi 9A has larger screen size than OPPO Reno4 5G. |
Screen Resolution (Display Resolution) | 1600 x 720 pixels | 2400 x 1080 pixels | OPPO Reno4 5G has better screen resolution than Xiaomi Redmi 9A. |
Display Format | HD+ | Full HD+ | |
Pixel Density | - | 409 ppi | |
Aspect Ratio | 20:9 | 20:9 | |
Max Brightness | 400 cd/m² | 800 cd/m² | OPPO Reno4 5G has better display brightness than Xiaomi Redmi 9A. |
Colour Depth | - | 16.7 million colours | |
Contrast Ratio | 1500:1 | 800000:1 | OPPO Reno4 5G has better display contrast ratio than Xiaomi Redmi 9A. |
Display Enhancement Technology | Blue light filter, Sunlight mode | - | |
Display Refresh Rate | - | 60 Hz | |
Display Features | Reading mode, Colour temperature adjustment, Dot Drop display | DCI-P3 Wide colour gamut, Dark mode, 180Hz sampling rate | |
Display Protection (Screen Protector) | - | Corning Gorilla Glass (scratch resistant glass) |
PROCESSOR | Xiaomi Redmi 9A | OPPO Reno4 5G |
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Processor Type (CPU) | MediaTek Helio G25 | Qualcomm Snapdragon 765G | |
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Clock Speed | 2 GHz | 2.4 GHz | OPPO Reno4 5G has higher clock speed than Xiaomi Redmi 9A. |
Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
64-bit Architecture | Yes | - | Xiaomi Redmi 9A has 64-bit architecture. |
Graphics System (GPU) | PowerVR GE8320 | Qualcomm ADRENO 620 |
MEMORY | Xiaomi Redmi 9A | OPPO Reno4 5G |
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RAM | LPDDR4X SDRAM - 2 GB | LPDDR4X SDRAM - 8 GB | OPPO Reno4 5G has more RAM than Xiaomi Redmi 9A. |
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Internal Memory Size (Storage Capacity) | 32 GB | 128 GB | OPPO Reno4 5G has more internal memory than Xiaomi Redmi 9A. |
Memory Interface | - | UFS 2.1 | |
Supported Flash Memory Cards (Expandable Memory) | microSD | - |
CAMERA | Xiaomi Redmi 9A | OPPO Reno4 5G |
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MAIN CAMERA |
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Number of Main Cameras | 1 | 3 | |
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Sensor Resolution | 13 Megapixel | 48 Megapixel | OPPO Reno4 5G has better camera resolution than Xiaomi Redmi 9A. |
Sensor Size | - | 1/2" | |
Sensor Name | - | Sony Exmor RS IMX586 sensor | |
Lens Aperture | - | F/1.7 | |
Lens Construction | - | 6-element | |
Pixel Size | - | 0.8 μm | |
Focus Adjustment | Automatic | Automatic | |
Laser Auto Focus | - | Yes | |
Minimum Focal Length (Focal Distance) | - | 26 mm | |
Special Effects | HDR, Kaleidoscope | HDR, Bokeh effect | |
Camera Modes | AI portrait mode, AI Beautify 5.0 | Time-lapse mode, night mode, Expert Mode, Text, AI Beautify, AI Portait, Pano mode, Dazzle Colour Mode | |
Face Recognition (Face ID) | Face recognition | - | Xiaomi Redmi 9A has face detection. |
Light Source | Single tone LED flash | LED flash | |
Still Image Resolutions | - | 8000 x 6000 | |
Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps, 1280 x 720 (720p) at 60 fps | |
Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), AI scene detection | Noise reduction, Phase Detect Auto-Focus (PDAF), Electronic Image Stabiliser (EIS), Closed loop processing, 4-in-1 Pixel technology, Ultra Steady Video, contrast detection auto-focus (CDAF), laser detection auto focus (LDAF) |
SECOND CAMERA |
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Sensor Resolution (2nd Camera) | - | 8 Megapixel | |
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Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
Lens Aperture (2nd Camera) | - | F/2.2 | |
Lens Element Qty (2nd Camera) | - | 5-element | |
Field of View (2nd Camera) | - | 119 degree(s) | |
Minimum Focal Length (2nd Camera) | - | 16 mm | |
Camera Functions (2nd Camera) | - | Monochrome | |
Camera Modes (2nd Camera) | - | Ultra Night Mode 3.0 | |
Camera Features (2nd Camera) | - | 5-piece lens, Ultra Steady Video Pro |
THIRD CAMERA |
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Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
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Lens Aperture (3rd Camera) | - | F/2.4 | |
Lens Element Qty (3rd Camera) | - | 3-element |
FRONT CAMERA |
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Number of Front Cameras | 1 | 2 | |
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Sensor Resolution (Front) | 5 Megapixel | 32 Megapixel | OPPO Reno4 5G has better front camera resolution than Xiaomi Redmi 9A. |
Sensor Name (Front) | - | Sony Exmor RS IMX616 sensor | |
Lens Aperture (Front) | F/2.2 | F/2.4 | Xiaomi Redmi 9A has better front lens aperture than Xiaomi Redmi 9A. |
Lens Element Qty (Front) | - | 5-element | |
Pixel Size (Front) | 1.12 μm | 0.8 μm | Xiaomi Redmi 9A has larger front camera pixel size than OPPO Reno4 5G. |
Special Effects (Front) | HDR | - | |
Camera Modes (Front) | AI portrait mode, Portrait, AI Beautify 5.0 | Panorama, Time-lapse mode, Slow motion mode, night mode, Expert Mode, AI Beauty, Portrait | |
Face Recognition (Face ID) | Face recognition | - | Xiaomi Redmi 9A has face detection. |
Light Source (Front) | Display flash | Display flash | |
Still Image Resolutions (Front) | - | 6560 x 4928 | |
Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
Camera Features (Front) | Self-timer, Palm shutter | Electronic Image Stabiliser (EIS), 5P lens |
SECOND FRONT CAMERA |
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Sensor Resolution (2nd Front) | - | 2 Megapixel | |
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Lens Aperture (2nd Front) | - | F/2.4 | |
Pixel Size (2nd Front) | - | 1.75 μm | |
Camera Functions (2nd Front) | - | Portait camera | |
Camera Features (2nd Front) | - | 3-piece lens |
BATTERY AND CHARGING | Xiaomi Redmi 9A | OPPO Reno4 5G |
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Battery Capacity (Battery Size) | 5000 mAh | 4020 mAh | Xiaomi Redmi 9A has larger battery capacity than OPPO Reno4 5G. |
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Fast Charging Technology | - | SuperVOOC 2.0 Flash Charge | OPPO Reno4 5G has fast charging technology. |
Recharge Time (Charging Time) | - | 36 min | |
Standby Time | 816 hours | 390 hours | Xiaomi Redmi 9A has longer standby time than OPPO Reno4 5G. |
Talk Time | 2280 minutes | 1560 minutes | Xiaomi Redmi 9A has longer battery life when making calls than OPPO Reno4 5G. |
Run Time Details | Standby: up to 816 hrs Playback (audio): up to 168 hrs Talk: up to 2280 min Playback (video): up to 19 hrs Gaming: up to 14 hrs |
Standby: up to 390 hrs Talk: up to 1560 min Playback (Music): up to 37 hrs Playback (video): up to 17.1 hrs |
CELLULAR | Xiaomi Redmi 9A | OPPO Reno4 5G |
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Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
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Mobile Broadband Generation | 4G | 5G | OPPO Reno4 5G has more advanced generation mobile network. |
Operating System | - | ColorOS 7.2 (based on Android 10) | |
Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS |
COMMUNICATIONS | Xiaomi Redmi 9A | OPPO Reno4 5G |
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Data Transmission | FDD-LTE, TDD-LTE | FDD-LTE, TDD-LTE, 5G NR FR1 | |
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2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 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 6, Band 8, Band 19 | |
3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 2100, 1900, 1700, 850, 800, 900, 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 17, Band 18, Band 19, Band 20, 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 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, 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, n77, 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, TDD TD 3700, TDD TD 3500, TDD 2300 | |
Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac | |
Bluetooth | Bluetooth 5.0 | Bluetooth 5.1 | |
NFC | - | Yes | OPPO Reno4 5G has NFC reader for mobile payments. |
Messaging Services | SMS, MMS | - |
MEDIA | Xiaomi Redmi 9A | OPPO Reno4 5G |
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Supported Digital Audio Standards | AAC, PCM, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), AMR-WB, AMR-NB | WAV, WMA, AAC, AMR, MP3, FLAC, OGG, APE (Monkey's Audio), apt-X, LDAC, MID, SBC, apt-X HD, APTX-TWS+ | |
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Supported Digital Video Standards | MKV, MPEG4-ASP, MPEG-4 SP, H.264 BP, H.264 MP, H.264 HP | MKV, FLV, AVI, MOV, WMV, 3GP, MP4 | |
Sound Enhancements | 0.64cc Sound Chamber | Dolby Atmos sound technology |
FEATURES | Xiaomi Redmi 9A | OPPO Reno4 5G |
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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 | |
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Sensors | Accelerometer, ambient light sensor, distance sensor | Accelerometer, ambient light sensor, proximity sensor, pedometer, gyro sensor, geomagnetic sensor, gravity sensor | |
Security Devices | Face recognition | Fingerprint reader (under display) | |
Additional Phone Features | AI face unlock, HyperEngine technology | MU-MIMO technology, Google Lens |
OTHERS | Xiaomi Redmi 9A | OPPO Reno4 5G |
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Included Accessories | USB cable, SIM card removal tool, 10W charger | Headphones, power adapter, SIM card removal tool, USB-C cable, protective case | |
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Compliant Standards | - | IP54, TUV Rheinland Certified Safe Fast-Charge System |