Side by side comparison and review of Samsung Galaxy S9 and Xiaomi Redmi 7A. Compare sizes, cameras, batteries, memory capacities and other key specifications and features to simplify the choice of your perfect phone. Our goal is to make it easier for you to decide on the phone that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Samsung Galaxy S9 | Xiaomi Redmi 7A |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-G960W | - | |
| Form Factor | Touch | Touch | |
| Height | 147.7 mm | 146.3 mm | Samsung Galaxy S9 has greater height than Xiaomi Redmi 7A. |
| Width | 68.7 mm | 70.41 mm | Xiaomi Redmi 7A has greater width than Samsung Galaxy S9. |
| Depth | 8.5 mm | 9.55 mm | Samsung Galaxy S9 is narrower than Samsung Galaxy S9. |
| Weight | 163 g | 165 g | Samsung Galaxy S9 is lighter than Samsung Galaxy S9. |
| Body Colour | Titanium grey | Lilac purple | Midnight black | Coral blue | Matte black | |
| Body Material | Metal frame | - | |
| Protection | Dustproof, splashproof, waterproof | Splashproof | |
| Waterproof (Water-resistant) | Yes | - | Samsung Galaxy S9 is waterproof. |
| IP rating | IP68 | - | |
| SAR Value | 1.08 W/kg (body), 0.63 W/kg (head) | 1.166 W/kg (body), 0.557 W/kg (head), 2.88 W/kg (limb) | |
| Integrated Components | Heart rate sensor | FM radio | |
| Connector Type | USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
Micro-USB Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Single-SIM | Dual-SIM |
| DISPLAY | Samsung Galaxy S9 | Xiaomi Redmi 7A |
|---|
| Display Type | OLED display | LCD display | |
|---|---|---|---|
| Display Technology | Quad HD+ Super AMOLED | - | |
| Screen Size (Display Size) | 5.8" | 5.45" | Samsung Galaxy S9 has larger screen size than Xiaomi Redmi 7A. |
| Screen Resolution (Display Resolution) | 2960 x 1440 pixels | 1440 x 720 pixels | Samsung Galaxy S9 has better screen resolution than Xiaomi Redmi 7A. |
| Display Format | QHD+ | HD+ | |
| Pixel Density | 570 ppi | 295 ppi | Samsung Galaxy S9 has better pixel density than Xiaomi Redmi 7A. |
| Aspect Ratio | 18.5:9 | 18:9 | |
| Colour Depth | 16.7 million colours | - | |
| Contrast Ratio | - | 1000:1 | |
| HDR | Yes | - | Samsung Galaxy S9 has HDR. |
| Display Enhancement Technology | - | Sunlight mode | |
| Display Features | Always-on display, Edge Screen, Infinity Display | Reading mode, Colour temperature adjustment, night mode | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | - |
| PROCESSOR | Samsung Galaxy S9 | Xiaomi Redmi 7A |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 845 | Qualcomm Snapdragon 439 | |
|---|---|---|---|
| Processor Number | MSM8998 | - | |
| Clock Speed | 2.8 GHz | 2 GHz | Samsung Galaxy S9 has higher clock speed than Xiaomi Redmi 7A. |
| 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 630 | Qualcomm ADRENO 505 |
| MEMORY | Samsung Galaxy S9 | Xiaomi Redmi 7A |
|---|
| RAM | LPDDR4 SDRAM - 4 GB | 2 GB | Samsung Galaxy S9 has more RAM than Xiaomi Redmi 7A. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 16 GB | Samsung Galaxy S9 has more internal memory than Xiaomi Redmi 7A. |
| User Memory | 48.8 GB | - | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 400 GB | microSDHC, microSDXC - up to 256 GB |
| CAMERA | Samsung Galaxy S9 | Xiaomi Redmi 7A |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 12 Megapixel | Both phones have the same camera resolution. |
| Sensor Size | 1/2.55" | - | |
| Lens Aperture | F/1.5 & f/2.4 | F/2.2 | Samsung Galaxy S9 has better lens aperture than Samsung Galaxy S9. |
| Pixel Size | - | 1.25 μm | |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | Samsung Galaxy S9 has optical stabilisation. |
| Focus Adjustment | Automatic, manual | Automatic | |
| Digital Zoom | 8x | - | |
| Self-Timer Delay | Yes | - | |
| Special Effects | Motion effect, HDR, Stamp, Bokeh effect, Grid Line, Stickers | HDR | |
| HDR Mode | - | Auto HDR mode | |
| Camera Modes | Panorama, Pro mode, Timer mode, HYPERLAPSE, Auto mode, low-light shots, Food mode, Super Slow-mo, AR Emoji | AI portrait mode, AI Beautify 4.0 | |
| Face Recognition (Face ID) | Face detection | Face recognition | Both phones have face detection. |
| White Balance | Custom, automatic | - | |
| Light Source | LED flash | LED flash | |
| Video Resolutions | 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, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1280 x 720 (720p) at 960 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, 2560 x 1440 (QHD) at 30 fps | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Functions) | Selective Focus, Quick Launch, Playback zoom, Tracking Focus, Motion photo, Exposure, Shutter speed, geotagging, Continuous Auto Focus (CAF), RAW image capture, VDIS (Video Digital Image Stabilisation), High CRI LED flash, Tracking AF, Stamps, location tags, Hyperlapse video support 1080p, Live focus with bokeh filters, Super Speed Dual Pixel | Phase Detect Auto-Focus (PDAF) |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 8 Megapixel | 5 Megapixel | Samsung Galaxy S9 has better front camera resolution than Xiaomi Redmi 7A. |
| Sensor Size (Front) | 1/3.6" | - | |
| Sensor Type (Front) | CMOS | - | |
| Lens Aperture (Front) | F/1.7 | - | |
| Focus Adjustment | Automatic | - | |
| Special Effects (Front) | HDR, Grid Line | HDR | |
| Camera Modes (Front) | Timer mode, wide selfie mode, selfie mode, AR Emoji, selfie focus | AI portrait mode, AI Beautify 4.0 | |
| Face Recognition (Face ID) | - | Face recognition | Xiaomi Redmi 7A has face detection. |
| Light Source (Front) | - | Display flash | |
| Camera Features (Front) | Quick launch, Motion photo, Stamps, location tags, VDIS (Video Digital Image Stabilization) | Selfie countdown |
| BATTERY AND CHARGING | Samsung Galaxy S9 | Xiaomi Redmi 7A |
|---|
| Battery Capacity (Battery Size) | 3000 mAh | 4000 mAh | Xiaomi Redmi 7A has larger battery capacity than Samsung Galaxy S9. |
|---|---|---|---|
| Wireless Charging | Yes | - | Samsung Galaxy S9 can be charged wirelessly. |
| Wireless Charging Standards | WPC, PMA | - | |
| Standby Time | 326 hours | - | |
| Talk Time | 1860 minutes | - | |
| Run Time Details | Talk (3G): up to 1860 min Active online usage (Wi-Fi): up to 14 hrs Active online usage (3G): up to 12 hrs Active online usage (LTE): up to 14 hrs Playback (audio (Always On Display Off)): up to 90 hrs Playback (audio (Always On Display On)): up to 51 hrs Playback (video): up to 17 hrs Standby (AOD off): up to 326 hrs Standby (AOD on): up to 82 hrs |
- |
| CELLULAR | Samsung Galaxy S9 | Xiaomi Redmi 7A |
|---|
| Technology | TD-SCDMA / WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 8.0 Oreo | Android 9.0 Pie | |
| User Interface | - | MIUI 9 | |
| Intelligent Assistant | Bixby | - | |
| Payment Technology | Samsung Pay | - | |
| Navigation | GPS, GLONASS, BeiDou, Galileo | GPS, A-GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | Samsung Galaxy S9 | Xiaomi Redmi 7A |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE, VoWiFi | 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 8 | Band 1, Band 2, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 2100, 1900, 850, 900 | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 18, Band 19, Band 20, Band 25, Band 29, Band 30, Band 38, Band 39, Band 40, Band 41, Band 46, Band 66 | 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 700a, FDD 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 700d, FDD 2300 WCS, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 5150, FDD 1700 - 2110 AWS-3 | 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, ANT+/ANT | IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 5.0 LE | Bluetooth 4.2 | |
| Bluetooth Profiles | HFP, HSP, OPP, PAN, A2DP, AVRCP, HID, SAP, PBAP, MAP, HOGP | - | |
| NFC | Yes | - | Samsung Galaxy S9 has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Samsung Galaxy S9 | Xiaomi Redmi 7A |
|---|
| Supported Digital Audio Standards | WAV, WMA, AAC, PCM, AMR, MP3, FLAC, AAC-LC, XMF, AAC +, OGG, eAAC+, MIDI, APE (Monkey's Audio), M4A, apt-X, DSF, DSD, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, OPUS, DFF, MID, AMR-WB, AMR-NB, Vorbis, DSD64, DSD128 | AAC, PCM, AMR, MP3, FLAC, AAC +, MP4, AMR-WB, AMR-NB, WAVE | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, VC-1, FLV, AVC, AVI, MPEG-4, WMV, ASF, 3GP, H.264, H.263, M4V, WebM, HEVC, MP43, 3G2, WMV8, VP8, VP9, H.265, WMV7 | FLV, H.263, H.264 AVC Main Profile (MP), H.264 AVC Baseline Profile(BP) | |
| Sound Enhancements | Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, stereo speakers tuned by AKG, Dolby Digital sound | - |
| FEATURES | Samsung Galaxy S9 | Xiaomi Redmi 7A |
|---|
| 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, proximity sensor, barometer, gyro sensor, hall sensor, RGB sensor, heart rate, pressure sensor, geomagnetic sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass | |
| Security Devices | Face recognition, fingerprint reader, eye scan | Face recognition | |
| Security Technology | - | A.I. face recognition | |
| Additional Phone Features | Multitasking, Face Unlock, Wi-Fi Miracast, Multi Window, MU-MIMO technology, Fast Charging, Samsung KNOX, High AOP Mic, Samsung DeX support, Bixby Vision, Intelligent Scan | AI face unlock |
| OTHERS | Samsung Galaxy S9 | Xiaomi Redmi 7A |
|---|
| Included Accessories | Power adapter, SIM card removal tool, USB Connector (USB-C), micro-USB connector, USB-C cable, headset (tuned by AKG) | USB cable, power adapter, SIM card removal tool | |
|---|---|---|---|
| Compliant Standards | IP68 | TÜV Rheinland Certified Eye-Care | |
| Max Depth of Water Resistance | 1.5 m | - |
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