In depth comparison and review of OPPO R9s and Xiaomi Redmi 8. 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 | OPPO R9s | Xiaomi Redmi 8 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 153 mm | 156.5 mm | Xiaomi Redmi 8 has greater height than OPPO R9s. |
| Width | 74.3 mm | 75.4 mm | Xiaomi Redmi 8 has greater width than OPPO R9s. |
| Depth | 6.58 mm | 9.4 mm | OPPO R9s is narrower than OPPO R9s. |
| Weight | 145 g | - | |
| Body Colour | Red | Black | Rose gold | Gold | Sapphire blue | |
| Protection | - | Splashproof | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | - | 1.48 W/kg (body), 0.231 W/kg (head), 2.23 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 Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM (SIM1 and SIM2/MicroSD slots) | Dual-SIM | |
| SIM Card Configuration Details | Nano SIM + nano SIM/microSD | - |
| DISPLAY | OPPO R9s | Xiaomi Redmi 8 |
|---|
| Display Type | OLED display | - | |
|---|---|---|---|
| Display Technology | AMOLED | - | |
| Screen Size (Display Size) | 5.5" | 6.22" | Xiaomi Redmi 8 has larger screen size than OPPO R9s. |
| Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 1520 x 720 pixels | OPPO R9s has better screen resolution than Xiaomi Redmi 8. |
| Display Format | Full HD | HD+ | |
| Pixel Density | 401 ppi | 270 ppi | OPPO R9s has better pixel density than Xiaomi Redmi 8. |
| Aspect Ratio | - | 19:9 | |
| Max Brightness | - | 400 cd/m² | |
| Colour Depth | 16.7 million colours | - | |
| Contrast Ratio | - | 1500:1 | |
| Display Enhancement Technology | - | Sunlight mode | |
| Display Features | - | Reading mode, Colour temperature adjustment, night mode, Dot Drop display | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | Corning Gorilla Glass 5 (scratch resistant glass) |
| PROCESSOR | OPPO R9s | Xiaomi Redmi 8 |
|---|
| Processor Type (CPU) | Qualcomm | Qualcomm Snapdragon 439 | |
|---|---|---|---|
| Processor Number | MSM8953 | - | |
| Clock Speed | 2 GHz | 2 GHz | Both phones have the same clock speed. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | - | OPPO R9s has 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 506 | Qualcomm ADRENO 505 |
| MEMORY | OPPO R9s | Xiaomi Redmi 8 |
|---|
| RAM | 4 GB | LPDDR3 SDRAM - 3 GB | OPPO R9s has more RAM than Xiaomi Redmi 8. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 32 GB | OPPO R9s has more internal memory than Xiaomi Redmi 8. |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 256 GB | microSDHC, microSDXC |
| CAMERA | OPPO R9s | Xiaomi Redmi 8 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 2 | |
|---|---|---|---|
| Sensor Resolution | 16 Megapixel | 12 Megapixel | OPPO R9s has better camera resolution than Xiaomi Redmi 8. |
| Sensor Size | 1/2.8" | - | |
| Sensor Name | Sony Exmor RS IMX398 sensor | - | |
| Lens Aperture | F/1.7 | - | |
| Focus Adjustment | Automatic | Automatic | |
| Special Effects | - | HDR | |
| Camera Modes | Panorama, low-light shots, GIF animation function | AI portrait mode, Landscapes, Night scenes, AI Beautify 4.0 | |
| Face Recognition (Face ID) | - | Face recognition | Xiaomi Redmi 8 has face detection. |
| Light Source | LED light | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, 1280 x 720 (720p) at 60 fps | |
| Camera Features (Functions) | Noise reduction, Electronic Image Stabiliser (EIS), Dual Phase Detect Auto-Focus (PDAF) | Phase Detect Auto-Focus (PDAF), AI Dual camera, AI scene detection |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 2 Megapixel |
|---|
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 16 Megapixel | 8 Megapixel | OPPO R9s has better front camera resolution than Xiaomi Redmi 8. |
| Lens Aperture (Front) | F/2.0 | F/2.0 | Both phones have the same front camera lens aperture. |
| Pixel Size (Front) | - | 1.12 μm | |
| Special Effects (Front) | Beautify 4.0 | HDR | |
| HDR Mode (Front) | Auto HDR mode | - | |
| Camera Modes (Front) | - | AI portrait mode, AI Beautify 4.0 | |
| Face Recognition (Face ID) | - | Face recognition | Xiaomi Redmi 8 has face detection. |
| Light Source (Front) | - | Display flash | |
| Camera Features (Front) | - | Self-timer |
| BATTERY AND CHARGING | OPPO R9s | Xiaomi Redmi 8 |
|---|
| Battery Capacity (Battery Size) | 3010 mAh | 5000 mAh | Xiaomi Redmi 8 has larger battery capacity than OPPO R9s. |
|---|---|---|---|
| Fast Charging Technology | - | Qualcomm Quick Charge 3.0 | Xiaomi Redmi 8 has fast charging technology. |
| Recharge Time (Charging Time) | - | 2.2 hour(s) | |
| Standby Time | - | 625 hours | |
| Talk Time | - | 1680 minutes | |
| Run Time Details | - | Standby: up to 625 hrs Playback (audio): up to 180.5 hrs Talk: up to 1680 min Playback (video): up to 17 hrs Navigation: up to 16.5 hrs |
| CELLULAR | OPPO R9s | Xiaomi Redmi 8 |
|---|
| 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 3.0 (based on Android 6.0.1) | - | |
| Navigation | GPS, A-GPS | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | OPPO R9s | Xiaomi Redmi 8 |
|---|
| Data Transmission | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | - | 850 GSM, 900 GSM, 1900 GSM, 2100 GSM | |
| 3G UMTS Band | - | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | - | 2100, 1900, 1700, 850, 900 | |
| 4G LTE Band | - | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, 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 DD, TDD 2600, TDD 2300 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 4.0 | Bluetooth 4.2 | |
| Bluetooth Profiles | A2DP | - | |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | OPPO R9s | Xiaomi Redmi 8 |
|---|
| Supported Digital Audio Standards | WAV, WMA, AMR, MP3, FLAC, OGG, APE (Monkey's Audio), MID | AAC, PCM, MP3, FLAC, AAC +, APE (Monkey's Audio), AMR-WB, AMR-NB | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, MOV, MPEG-4, WMV, ASF, 3GP | MKV, MPEG-4, MPEG4-ASP, MPEG-4 SP, H.264 BP, H.264 MP, H.264 HP | |
| Sound Enhancements | - | Large speaker box |
| FEATURES | OPPO R9s | Xiaomi Redmi 8 |
|---|
| Phone Functions | Speakerphone, call timer, conference call, flight mode, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Ambient light sensor, digital compass, gyro sensor, G-sensor, distance sensor | Accelerometer, ambient light sensor, digital compass, distance sensor | |
| Security Devices | Fingerprint reader | Face recognition, fingerprint reader | |
| Additional Phone Features | Glove and Wet Touchscreen Operation | Infrared remote control, notification LED, AI face unlock |
| OTHERS | OPPO R9s | Xiaomi Redmi 8 |
|---|
| Included Accessories | Headset, USB cable, power adapter | SIM card removal tool, USB-C cable, TPU case, 10W charger |
|---|
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