On this page we compare specs Xiaomi Redmi Note 9 Octa core (2 GHz, Dual core, Cortex A75 2 GHz, Hexa Core, Cortex A55) with Oppo A3s Octa-core 1.8 GHz Cortex-A53, we compare external dimensions, compare screens and performance, the amount of RAM and memory for storing media data, battery capacity and characteristics of photo cameras, compare the presence of various sensors and functions.
Hardware and OS | Xiaomi Redmi Note 9 | Oppo A3s |
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Operating system | Android v10 (Q) | Android 8.1 (Oreo); ColorOS 5.1 |
Processor | Octa core (2 GHz, Dual core, Cortex A75 2 GHz, Hexa Core, Cortex A55) | Octa-core 1.8 GHz Cortex-A53 |
Custom UI | MIUI | |
Chipset | MediaTek Helio G85 | Qualcomm SDM450 Snapdragon 450 (14 nm) |
GPU | | Adreno 506 |
Internal memory | 64 GB | 16 GB, 2 GB RAM |
Architecture | 64 bit | |
External memory | | microSD, up to 256 GB (dedicated slot) |
RAM | 4 GB | |
Expandable Memory | yes Up to 512 GB | |
Graphics | Mali-G52 | |
SIM Slot(s) | Dual SIM, GSM GSM | |
Display | Xiaomi Redmi Note 9 | Oppo A3s |
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Type | | IPS LCD |
Size | | 6.2" inc |
Resolution | | 720 x 1520 px |
Touchscreen | | capacitive touchscreen |
Screen-to-Body Ratio | | 81.2% |
Screen Size | 6.53 inches (16.59 cm) | |
Display area | | 95.9 cm2 |
Screen Resolution | 1080 x 2340 pixels | |
Display aspect ratio | | 19:9 (height:width) |
Display Type | IPS LCD | |
Pixel Density | 395 ppi | 271 PPI |
Colors | | 16M |
Aspect Ratio | 19.5:9 | |
Refresh Rate | 60 Hz | |
Screen Protection | Corning Gorilla Glass v5 | |
Touch Screen | yes Capacitive Touchscreen, Multi-touch | |
Connectivity | Xiaomi Redmi Note 9 | Oppo A3s |
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2G Network | | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
3G Network | | HSDPA 850 / 900 / 2100 |
4G Network | | LTE |
Wi-Fi | yes Wi-Fi 802.11, a/b/g/n | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
Network | 4G: Available , 3G: Available, 2G: Available | GSM / HSPA / LTE |
SIM card | | Dual SIM (Nano-SIM, dual stand-by) |
Bluetooth | yes v5.0 | 4.2, A2DP, LE |
Edge | | Yes |
GPRS | | Yes |
GPS | yes with A-GPS, Glonass | Yes, with A-GPS |
Speed | | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
USB | | microUSB 2.0, USB On-The-Go |
SIM Size | SIM1: Nano, SIM2: Nano | |
VoLTE | yes | |
Wi-Fi Calling | yes | |
Wi-Fi Features | Wi-Fi Direct, Mobile Hotspot | |
USB Connectivity | Mass storage device, USB charging | |
Main Camera | Xiaomi Redmi Note 9 | Oppo A3s |
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Resolution | 48 MP f/1.79 Primary Camera(2" sensor size, 0.8µm pixel size)8 MP f/2.2, Wide Angle, Ultra-Wide Angle Camera(4.0" sensor size)2 MP f/2.4, Macro Camera(1.75µm pixel size)2 MP f/2.4, Depth Camera(5.0" sensor size) | |
Image Resolution | 8000 x 6000 Pixels | |
Flash | yes LED Flash | |
Sensor | ISOCELL Plus | |
Camera Features | Digital Zoom, Auto Flash, Face detection, Touch to focus | |
Autofocus | yes Phase Detection autofocus | |
Physical Aperture | F1.79 | |
Video Recording | 3840x2160 @ 30 fps | |
Shooting Modes | Continuos Shooting, High Dynamic Range mode (HDR), Burst mode | |
Settings | Exposure compensation, ISO control | |
Camera | Xiaomi Redmi Note 9 | Oppo A3s |
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Main camera | | 13 MP, Dual |
Specs | | 13 MP, f/2.2, AF -2 MP, f/2.4, depth sensor |
Features | | LED flash, HDR, panorama |
Video | | 1080p@30fps |
Selfie camera | | 8 MP, Single |
Front Camera | Xiaomi Redmi Note 9 | Oppo A3s |
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Resolution | 13 MP f/2.25 Primary Camera(3" sensor size, 1.12µm pixel size) | |
Physical Aperture | F2.25 | |
Video Recording | 1920x1080 @ 30 fps | |
Multimedia | Xiaomi Redmi Note 9 | Oppo A3s |
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3.5 mm Jack | | Yes |
Radio | | FM radio |
Audio Jack | 3.5 mm | |
Loudspeaker | yes | |
Design | Xiaomi Redmi Note 9 | Oppo A3s |
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Colors | | Red, Dark Purple |
Dimensions | | 156.2 x 75.6 x 8.2 mm |
Weight | 200 grams | 168 g |
Height | 161.4 mm | |
Width | 76.7 mm | |
Thickness | 8.7 mm | |
Colours | Pebble Grey, Arctic White, Aqua Green | |
Waterproof | yes Splash proof | |
Battery | Xiaomi Redmi Note 9 | Oppo A3s |
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Battery capacity | | 4230 mAh, Non-removable Li-Ion |
Type | Li-ion | |
Capacity | 5020 mAh | |
User Replaceable | No | |
Quick Charging | yes Fast, 22.5W | |
USB Type-C | yes | |
USB OTG Support | yes | |
Other | Xiaomi Redmi Note 9 | Oppo A3s |
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Release date | | 2018, July |
Sensors | | Accelerometer, proximity, compass |
Features | Xiaomi Redmi Note 9 | Oppo A3s |
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Fingerprint Sensor | yes | |
Fingerprint Sensor Position | Rear | |
Other Sensors | Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope | |