In depth comparison and review of Xiaomi Redmi Note 9S and Google Pixel 4a. 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 Note 9S | Google Pixel 4a |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | G025J | |
| Form Factor | Touch | Touch | |
| Height | 165.75 mm | 144 mm | Xiaomi Redmi Note 9S has greater height than Google Pixel 4a. |
| Width | 76.68 mm | 69.4 mm | Xiaomi Redmi Note 9S has greater width than Google Pixel 4a. |
| Depth | 8.8 mm | 8.2 mm | Google Pixel 4a is narrower than Xiaomi Redmi Note 9S. |
| Weight | 209 g | 143 g | Google Pixel 4a is lighter than Xiaomi Redmi Note 9S. |
| Body Colour | Aurora blue | Just black | |
| Body Material | Curved 3D glass, Gorilla glass 5 | Polycarbonate | |
| Protection | Dustproof, splashproof | - | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 0.98 W/kg (body), 0.72 W/kg (head), 2.35 W/kg (limb) | 1.19 W/kg (body), 1.18 W/kg (head) | |
| Integrated Components | Ultra-linear speakers | - | |
| Connector Type | USB Type-C - 24 pin USB-C 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, Electronic SIM card (e-SIM) | |
| SIM Card Qty | Dual-SIM | Single-SIM | |
| SIM Card Configuration Details | Nano SIM + nano SIM/microSD | - |
| DISPLAY | Xiaomi Redmi Note 9S | Google Pixel 4a |
|---|
| Display Type | LCD display | OLED display | |
|---|---|---|---|
| Display Technology | - | OLED | |
| Screen Size (Display Size) | 6.67" | 5.8" | Xiaomi Redmi Note 9S has larger screen size than Google Pixel 4a. |
| Screen Resolution (Display Resolution) | 2400 x 1080 pixels | 2340 x 1080 pixels | Xiaomi Redmi Note 9S has better screen resolution than Google Pixel 4a. |
| Display Format | Full HD+ | Full HD+ | |
| Pixel Density | - | 443 ppi | |
| Aspect Ratio | - | 19.5:9 | |
| Colour Depth | - | 16.7 million colours | |
| Contrast Ratio | 1500:1 | 100000:1 | Google Pixel 4a has better display contrast ratio than Xiaomi Redmi Note 9S. |
| HDR | Yes | Yes | Both phones have HDR. |
| Display Features | Reading mode 2.0, Dot Display | Always-on display, Now Playing, True black level, display with transmissive hole | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | Corning Gorilla Glass 3 (scratch resistant glass) |
| PROCESSOR | Xiaomi Redmi Note 9S | Google Pixel 4a |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 720G | Qualcomm Snapdragon 730 | |
|---|---|---|---|
| Clock Speed | 2.3 GHz | 2.2 GHz | Xiaomi Redmi Note 9S has higher clock speed than Google Pixel 4a. |
| 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 618 | Qualcomm ADRENO 618 |
| MEMORY | Xiaomi Redmi Note 9S | Google Pixel 4a |
|---|
| RAM | 4 GB | LPDDR4X SDRAM - 6 GB | Google Pixel 4a has more RAM than Xiaomi Redmi Note 9S. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 128 GB | Google Pixel 4a has more internal memory than Xiaomi Redmi Note 9S. |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 512 GB | - |
| CAMERA | Xiaomi Redmi Note 9S | Google Pixel 4a |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 4 | 1 | |
|---|---|---|---|
| Sensor Resolution | 48 Megapixel | 12.2 Megapixel | Xiaomi Redmi Note 9S has better camera resolution than Google Pixel 4a. |
| Sensor Size | 1/2" | - | |
| Lens Aperture | F/1.79 | F/1.7 | Google Pixel 4a has better lens aperture than Xiaomi Redmi Note 9S. |
| Lens Construction | 6-element | - | |
| Field of View (FoV) | 79 degree(s) | 77 degree(s) | Xiaomi Redmi Note 9S has larger lens field of view than Google Pixel 4a. |
| Pixel Size | 0.8 μm | 1.4 μm | Google Pixel 4a has larger camera pixel size than Xiaomi Redmi Note 9S. |
| Optical Image Stabiliser (OIS) | - | Optical Image Stabiliser (OIS) | Google Pixel 4a has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Special Effects | HDR, Kaleidoscope | Blur | |
| HDR Mode | - | HDR+ | |
| Camera Modes | Burst mode, Panorama, night mode, Smart ultra-wide angle mode, Photo timer, Custom watermark, Documents, Beautify, Levelling, Cinematic portraits | Portrait mode, Night Sight | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi Redmi Note 9S has face detection. |
| Light Source | Dual 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, 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 | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 30 fps, 1280 x 720 (720p) at 60 fps, 1920 x 1080 (1080p) at 120 fps, 1280 x 720 (720p) at 240 fps | |
| Camera Features (Functions) | 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 | Electronic Image Stabiliser (EIS), Dual Pixel Phase Detect Auto-Focus (PDAF), Share in a snap |
| 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) | 16 Megapixel | 8 Megapixel | Xiaomi Redmi Note 9S has better front camera resolution than Google Pixel 4a. |
| Lens Aperture (Front) | F/2.48 | F/2.0 | Google Pixel 4a has better front lens aperture than Xiaomi Redmi Note 9S. |
| Field of View (Front) | - | 84 degree(s) | |
| Pixel Size (Front) | 1 μm | 1.12 μm | Google Pixel 4a has larger front camera pixel size than Xiaomi Redmi Note 9S. |
| Focus Adjustment | - | Focus free | |
| Special Effects (Front) | HDR | - | |
| Camera Modes (Front) | 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) | - | 864 x 480, 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 | Xiaomi Redmi Note 9S | Google Pixel 4a |
|---|
| Battery Capacity (Battery Size) | 5020 mAh | 3140 mAh | Xiaomi Redmi Note 9S has larger battery capacity than Google Pixel 4a. |
|---|---|---|---|
| Fast Charging Technology | - | Power Delivery 2.0 | Google Pixel 4a has fast charging technology. |
| 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 Note 9S | Google Pixel 4a |
|---|
| Technology | WCDMA (UMTS) / GSM | CDMA2000 1X / GSM / WCDMA (UMTS) | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | - | Android 10 | |
| User Interface | MIUI 10 | - | |
| Intelligent Assistant | - | Google Assistant | |
| Payment Technology | Google Pay | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo | GPS, GLONASS, Galileo, QZSS |
| COMMUNICATIONS | Xiaomi Redmi Note 9S | Google Pixel 4a |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1900 GSM, 2100 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X, 1900 CDMA2000 1X | |
| 3G UMTS Band | Band 1, Band 2, Band 4, Band 5, Band 8 | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 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 28, Band 38, Band 40 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 14, Band 17, Band 18, Band 20, Band 25, Band 26, Band 28, Band 29, Band 30, Band 38, Band 39, Band 40, Band 41, Band 66, Band 71 | |
| 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 | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700 PS, FDD 700b, FDD 800 lower, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 700d, FDD 2300 WCS, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3, FDD 600 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 LE | |
| Bluetooth Profiles | - | A2DP | |
| NFC | - | Yes | Google Pixel 4a has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Xiaomi Redmi Note 9S | Google Pixel 4a |
|---|
| Supported Digital Audio Standards | WAV, AAC, AMR, MP3, FLAC, APE (Monkey's Audio), MP4 | AAC, apt-X, LDAC, apt-X HD | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, XviD, M4V, MP4 | - | |
| Audio Amplifier | Smart PA | - |
| FEATURES | Xiaomi Redmi Note 9S | Google Pixel 4a |
|---|
| 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, digital compass, gyro sensor, distance sensor, infrared (IR) sensor, In-screen ambient light sensor | Accelerometer, ambient light sensor, proximity sensor, barometer, magnetometer, gyro sensor | |
| Security Devices | Face recognition, fingerprint reader (side) | Fingerprint reader | |
| Security Technology | A.I. face recognition | - | |
| Additional Phone Features | Infrared remote control, AI face unlock, Qualcomm 5th generation AI Engine, Z-axis linear vibration motor | Dual microphones, MIMO technology, Android Sensor Hub, Noise suppression, ARCore, Google Lens, Titan M Security Module, Pixel Imprint sensor, 3 years of security and OS updates, Google Cast |
| OTHERS | Xiaomi Redmi Note 9S | Google Pixel 4a |
|---|
| Included Accessories | Protective cover, SIM card removal tool, USB-C cable, 18W charger | SIM card removal tool, Quick switch adapter, 18W USB-C power adapter, USB-C to USB-C cable (1 m) | |
|---|---|---|---|
| Compliant Standards | TUV Rheinland | HAC (Hearing Aid Compatible) |
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