Detailed comparison and review of Xiaomi Redmi 3S and Xiaomi Redmi Note 9S. With our comprehensive overview, you can simply compare sizes, functions, but also other key features of both phones and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the phone that best fits your needs and expectations.
| DESIGN AND DIMENSIONS | Xiaomi Redmi 3S | Xiaomi Redmi Note 9S |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 139.3 mm | 165.75 mm | Xiaomi Redmi Note 9S has greater height than Xiaomi Redmi 3S. |
| Width | 69.6 mm | 76.68 mm | Xiaomi Redmi Note 9S has greater width than Xiaomi Redmi 3S. |
| Depth | 8.5 mm | 8.8 mm | Xiaomi Redmi 3S is narrower than Xiaomi Redmi 3S. |
| Weight | 144 g | 209 g | Xiaomi Redmi 3S is lighter than Xiaomi Redmi 3S. |
| Body Colour | Gold | Aurora blue | |
| Body Material | Metal | Curved 3D glass, Gorilla glass 5 | |
| Protection | - | Dustproof, splashproof | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 0.43 W/kg (body), 0.62 W/kg (head) | 0.98 W/kg (body), 0.72 W/kg (head), 2.35 W/kg (limb) | |
| Integrated Components | - | Ultra-linear speakers | |
| Connector Type | Micro-USB - 5 pin Micro-USB Type B | USB Type-C - 24 pin USB-C Headset 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 | Nano SIM + nano SIM/microSD |
| DISPLAY | Xiaomi Redmi 3S | Xiaomi Redmi Note 9S |
|---|
| Display Type | - | LCD display | |
|---|---|---|---|
| Screen Size (Display Size) | 5" | 6.67" | Xiaomi Redmi Note 9S has larger screen size than Xiaomi Redmi 3S. |
| Screen Resolution (Display Resolution) | 1280 x 720 pixels | 2400 x 1080 pixels | Xiaomi Redmi Note 9S has better screen resolution than Xiaomi Redmi 3S. |
| Display Format | HD | Full HD+ | |
| Contrast Ratio | - | 1500:1 | |
| HDR | - | Yes | Xiaomi Redmi Note 9S has HDR. |
| Display Features | - | Reading mode 2.0, Dot Display | |
| Display Protection (Screen Protector) | - | Corning Gorilla Glass 5 (scratch resistant glass) |
| PROCESSOR | Xiaomi Redmi 3S | Xiaomi Redmi Note 9S |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 430 | Qualcomm Snapdragon 720G | |
|---|---|---|---|
| Clock Speed | 1.4 GHz | 2.3 GHz | Xiaomi Redmi Note 9S has higher clock speed than Xiaomi Redmi 3S. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | Yes | Both phones have 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 505 | Qualcomm ADRENO 618 |
| MEMORY | Xiaomi Redmi 3S | Xiaomi Redmi Note 9S |
|---|
| RAM | 2 GB | 4 GB | Xiaomi Redmi Note 9S has more RAM than Xiaomi Redmi 3S. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 16 GB | 64 GB | Xiaomi Redmi Note 9S has more internal memory than Xiaomi Redmi 3S. |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | microSDHC, microSDXC - up to 512 GB |
| CAMERA | Xiaomi Redmi 3S | Xiaomi Redmi Note 9S |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 4 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 48 Megapixel | Xiaomi Redmi Note 9S has better camera resolution than Xiaomi Redmi 3S. |
| Sensor Size | - | 1/2" | |
| Lens Aperture | F/2.0 | F/1.79 | Xiaomi Redmi Note 9S has better lens aperture than Xiaomi Redmi 3S. |
| Lens Construction | 5-element | 6-element | |
| Field of View (FoV) | - | 79 degree(s) | |
| Pixel Size | - | 0.8 μm | |
| Focus Adjustment | Automatic | Automatic | |
| Special Effects | HDR | HDR, Kaleidoscope | |
| Camera Modes | Panorama, manual mode | 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 light | Dual LED flash | |
| Still Image Resolutions | - | 8000 x 6000 | |
| Video Resolutions | 1920 x 1080 (1080p) | 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) | Phase Detect Auto-Focus (PDAF) | 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 | |
|---|---|---|---|
| Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | - | F/2.2 | |
| Field of View (2nd Camera) | - | 119 degree(s) | |
| Pixel Size (2nd Camera) | - | 1.12 μm |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 5 Megapixel | |
|---|---|---|---|
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Pixel Size (3rd Camera) | - | 1.12 μm | |
| Camera Functions (3rd Camera) | - | Macro camera | |
| Camera Features (3rd Camera) | - | AF (2cm-10cm) |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Lens Aperture (4th Camera) | - | F/2.4 | |
| Pixel Size (4th Camera) | - | 1.75 μm | |
| Camera Functions (4th Camera) | - | Depth camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 5 Megapixel | 16 Megapixel | Xiaomi Redmi Note 9S has better front camera resolution than Xiaomi Redmi 3S. |
| Lens Aperture (Front) | F/2.2 | F/2.48 | Xiaomi Redmi 3S has better front lens aperture than Xiaomi Redmi 3S. |
| Pixel Size (Front) | - | 1 μm | |
| Special Effects (Front) | - | HDR | |
| Camera Modes (Front) | Beautify Selfie mode | Panoramic selfies, AI portrait mode, AI Beautify, Slo-mo Selfie | |
| Face Recognition (Face ID) | Face recognition | Face recognition | Both phones have face detection. |
| Light Source (Front) | - | Display flash | |
| Video Resolutions (Front) | 1920 x 1080 (1080p) | - | |
| Camera Features (Front) | - | AI scene detection, Palm shutter, AI silhouette detection |
| BATTERY AND CHARGING | Xiaomi Redmi 3S | Xiaomi Redmi Note 9S |
|---|
| Battery Capacity (Battery Size) | 4100 mAh | 5020 mAh | Xiaomi Redmi Note 9S has larger battery capacity than Xiaomi Redmi 3S. |
|---|---|---|---|
| Talk Time | - | 1980 minutes | |
| Run Time Details | - | 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 | Xiaomi Redmi 3S | Xiaomi Redmi Note 9S |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| User Interface | MIUI V7 | MIUI 10 | |
| Payment Technology | - | Google Pay | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | Xiaomi Redmi 3S | Xiaomi Redmi Note 9S |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 900 GSM, 1900 GSM | 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 3, Band 5, Band 40 | 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 1800+, FDD 850, TDD 2300 | 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 802.11b/g/n | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 4.1 | Bluetooth 5.0 | |
| Bluetooth Profiles | HID | - | |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Xiaomi Redmi 3S | Xiaomi Redmi Note 9S |
|---|
| Supported Digital Audio Standards | AAC, PCM, MP3, FLAC, AC-3, AAC +, eAAC+, MIDI | WAV, AAC, AMR, MP3, FLAC, APE (Monkey's Audio), MP4 | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, VC-1, XviD, MPEG-4, ASF, DivX, MPEG-2, H.264, H.263, M4V, VP8, Sorenson Spark | MKV, XviD, M4V, MP4 | |
| Audio Amplifier | - | Smart PA |
| FEATURES | Xiaomi Redmi 3S | 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 | Ambient light sensor, proximity sensor, digital compass, gyro sensor, gravity sensor | Accelerometer, digital compass, gyro sensor, distance sensor, infrared (IR) sensor, In-screen ambient light sensor | |
| Security Devices | - | Face recognition, fingerprint reader (side) | |
| Security Technology | - | A.I. face recognition | |
| Additional Phone Features | Infrared remote control, Reading mode | Infrared remote control, AI face unlock, Qualcomm 5th generation AI Engine, Z-axis linear vibration motor |
| OTHERS | Xiaomi Redmi 3S | Xiaomi Redmi Note 9S |
|---|
| Included Accessories | USB cable, power adapter, SIM card removal tool | Protective cover, SIM card removal tool, USB-C cable, 18W charger | |
|---|---|---|---|
| Compliant Standards | - | TUV Rheinland |
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