OPPO A9 2020 vs. Xiaomi Redmi Note 9S

Phone Comparison, Reviews and Tests

In depth comparison and review of OPPO A9 2020 and Xiaomi Redmi Note 9S. 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

OPPO A9 2020 vs. Xiaomi Redmi Note 9S Comparison Chart
DESIGN AND DIMENSIONS OPPO A9 2020 Xiaomi Redmi Note 9S
Product Type Smartphone Smartphone
Manufacturer Model Number CPH1941 -
Form Factor Touch Touch
Height 163.6 mm 165.75 mm Xiaomi Redmi Note 9S has greater height than OPPO A9 2020.
Width 75.6 mm 76.68 mm Xiaomi Redmi Note 9S has greater width than OPPO A9 2020.
Depth 9.1 mm 8.8 mm Xiaomi Redmi Note 9S is narrower than OPPO A9 2020.
Weight 195 g 209 g OPPO A9 2020 is lighter than OPPO A9 2020.
Body Colour Marine green | Space purple Aurora blue
Body Material 3D glass Curved 3D glass, Gorilla glass 5
Protection - Dustproof, splashproof
Waterproof (Water-resistant) - -
SAR Value 0.976 W/kg (body), 0.847 W/kg (head), 2.118 W/kg (limb) 0.98 W/kg (body), 0.72 W/kg (head), 2.35 W/kg (limb)
Integrated Components - Ultra-linear speakers
Connector Type USB Type-C - 24 pin USB-C
Handset jack - mini-phone 3.5mm
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 OPPO A9 2020 Xiaomi Redmi Note 9S
Display Type LCD display LCD display
Display Technology TFT -
Screen Size (Display Size) 6.5" 6.67" Xiaomi Redmi Note 9S has larger screen size than OPPO A9 2020.
Screen Resolution (Display Resolution) 1600 x 720 pixels 2400 x 1080 pixels Xiaomi Redmi Note 9S has better screen resolution than OPPO A9 2020.
Display Format - Full HD+
Pixel Density 269 ppi -
Max Brightness 480 cd/m² -
Colour Depth 16.7 million colours -
Contrast Ratio 1500:1 1500:1 Both phones have the same display contrast ratio.
HDR - Yes Xiaomi Redmi Note 9S has HDR.
Display Enhancement Technology Blue light filter -
Display Features In-Cell Display Technology, Sunlight screen Reading mode 2.0, Dot Display
Display Protection (Screen Protector) - Corning Gorilla Glass 5 (scratch resistant glass)
PROCESSOR OPPO A9 2020 Xiaomi Redmi Note 9S
Processor Type (CPU) Qualcomm Snapdragon 665 Qualcomm Snapdragon 720G
Clock Speed - 2.3 GHz
Processor Core Qty - 8-core
64-bit Architecture - Yes Xiaomi Redmi Note 9S has 64-bit architecture.
Graphics System (GPU) Qualcomm ADRENO 610 Qualcomm ADRENO 618
MEMORY OPPO A9 2020 Xiaomi Redmi Note 9S
RAM LPDDR4X SDRAM - 4 GB 4 GB Both phones have the same RAM size.
Internal Memory Size (Storage Capacity) 128 GB 64 GB OPPO A9 2020 has more internal memory than Xiaomi Redmi Note 9S.
Memory Interface UFS 2.1 -
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 256 GB microSDHC, microSDXC - up to 512 GB
CAMERA OPPO A9 2020 Xiaomi Redmi Note 9S
MAIN CAMERA
Number of Main Cameras 4 4
Sensor Resolution 48 Megapixel 48 Megapixel Both phones have the same camera resolution.
Sensor Size 1/2.25" 1/2" OPPO A9 2020 has better camera sensor size than Xiaomi Redmi Note 9S.
Sensor Type CMOS -
Lens Aperture F/1.8 F/1.79 Xiaomi Redmi Note 9S has better lens aperture than OPPO A9 2020.
Lens Construction - 6-element
Field of View (FoV) - 79 degree(s)
Pixel Size 0.8 μm 0.8 μm Both phones have the same camera pixel size.
Focus Adjustment Automatic Automatic
Special Effects - HDR, Kaleidoscope
Camera Modes Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Portrait, Night, Ultra Night Mode 2.0 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 9S has face detection.
Light Source LED flash Dual LED flash
Still Image Resolutions - 8000 x 6000
Video Resolutions 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) 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, Slo-mo video 1280 x 720 (720p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 960 fps
Camera Features (Functions) Electronic Image Stabiliser (EIS) 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) 8 Megapixel 8 Megapixel Both phones have the same second camera resolution.
Sensor Size (2nd Camera) 1/4.0" -
Lens Type (2nd Camera) Ultra wide-angle lens Ultra wide-angle lens
Lens Aperture (2nd Camera) F/2.25 F/2.2 Xiaomi Redmi Note 9S has better second camera lens aperture than OPPO A9 2020.
Field of View (2nd Camera) 119 degree(s) 119 degree(s) Both phones have the same second camera lens field of view.
Pixel Size (2nd Camera) 1.12 μm 1.12 μm Both phones have the same second camera pixel size.
THIRD CAMERA
Sensor Resolution (3rd Camera) 2 Megapixel 5 Megapixel Xiaomi Redmi Note 9S has higher resolution third camera than OPPO A9 2020.
Sensor Size (3rd Camera) 1/5" -
Lens Aperture (3rd Camera) F/2.4 F/2.4 Both phones have the same lens aperture of the third camera.
Pixel Size (3rd Camera) 1.75 μm 1.12 μm OPPO A9 2020 has larger third camera pixel size than Xiaomi Redmi Note 9S.
Camera Functions (3rd Camera) - Macro camera
Camera Features (3rd Camera) - AF (2cm-10cm)
FOURTH CAMERA
Sensor Resolution (4th Camera) 2 Megapixel 2 Megapixel Both phones have the same resolution of the fourth camera.
Sensor Size (4th Camera) 1/5" -
Lens Aperture (4th Camera) F/2.4 F/2.4 Both phones have the same lens aperture of the fourth camera.
Pixel Size (4th Camera) 1.75 μm 1.75 μm Both phones have the same pixel size of the fourth camera.
Camera Functions (4th Camera) - Depth camera
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 16 Megapixel 16 Megapixel Both phones have the same front camera resolution.
Sensor Size (Front) 1/3.1" -
Lens Aperture (Front) F/2.0 F/2.48 OPPO A9 2020 has better front lens aperture than OPPO A9 2020.
Pixel Size (Front) 1 μm 1 μm Both phones have the same front camera pixel size.
Special Effects (Front) - HDR
Camera Modes (Front) AI Beauty Panoramic selfies, AI portrait mode, AI Beautify, Slo-mo Selfie
Face Recognition (Face ID) - Face recognition Xiaomi Redmi Note 9S has face detection.
Light Source (Front) - Display flash
Video Resolutions (Front) 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps -
Camera Features (Front) - AI scene detection, Palm shutter, AI silhouette detection
BATTERY AND CHARGING OPPO A9 2020 Xiaomi Redmi Note 9S
Battery Capacity (Battery Size) 5000 mAh 5020 mAh Xiaomi Redmi Note 9S has larger battery capacity than OPPO A9 2020.
Standby Time 450 hours -
Talk Time 2700 minutes 1980 minutes OPPO A9 2020 has longer battery life when making calls than Xiaomi Redmi Note 9S.
Run Time Details Standby: up to 450 hrs
Talk: up to 2700 min
Talk: up to 1980 min
Gaming: up to 13 hrs
Playback (Music): up to 147 hrs
Navigation: up to 16 hrs
Battery Technology - Lithium Ion
CELLULAR OPPO A9 2020 Xiaomi Redmi Note 9S
Technology WCDMA (UMTS) / GSM 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 10
Payment Technology - Google Pay
Navigation GPS, A-GPS, GLONASS, BeiDou, Galileo GPS, A-GPS, GLONASS, BeiDou, Galileo
COMMUNICATIONS OPPO A9 2020 Xiaomi Redmi Note 9S
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE GPRS, EDGE, HSDPA, HSUPA, HSPA+, 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 6, Band 8, Band 19 Band 1, Band 2, Band 4, Band 5, Band 8
3G UMTS Frequency 2100, 1900, 1700, 850, 800, 900, 800 2100, 1900, 1700, 850, 900
4G LTE Band 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 Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40
4G LTE Frequency 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 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
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 - OPPO A9 2020 has NFC reader for mobile payments.
Messaging Services SMS, MMS SMS, MMS
MEDIA OPPO A9 2020 Xiaomi Redmi Note 9S
Supported Digital Audio Standards - WAV, AAC, AMR, MP3, FLAC, APE (Monkey's Audio), MP4
Supported Digital Video Standards - MKV, XviD, M4V, MP4
Sound Enhancements Dolby Atmos sound technology, Hi-Res audio -
Audio Amplifier - Smart PA
FEATURES OPPO A9 2020 Xiaomi Redmi Note 9S
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, gyro sensor, geomagnetic sensor Accelerometer, digital compass, gyro sensor, distance sensor, infrared (IR) sensor, In-screen ambient light sensor
Security Devices Face recognition Face recognition, fingerprint reader (side)
Security Technology - A.I. face recognition
Additional Phone Features Multitasking, Game Boost 2.0 Infrared remote control, AI face unlock, Qualcomm 5th generation AI Engine, Z-axis linear vibration motor
OTHERS OPPO A9 2020 Xiaomi Redmi Note 9S
Included Accessories Headphones, power adapter, SIM card removal tool, cover, USB-C cable, screen protector (pre-applied) Protective cover, SIM card removal tool, USB-C cable, 18W charger
Compliant Standards - TUV Rheinland
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