Detailed comparison and review of Samsung Galaxy S9 and Samsung Galaxy A51 5G. 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 | Samsung Galaxy S9 | Samsung Galaxy A51 5G |
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Product Type | Smartphone | Smartphone | |
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Manufacturer Model Number | SM-G960W | SM-A516B/DS | |
Form Factor | Touch | Touch | |
Height | 147.7 mm | 158.9 mm | Samsung Galaxy A51 5G has greater height than Samsung Galaxy S9. |
Width | 68.7 mm | 73.6 mm | Samsung Galaxy A51 5G has greater width than Samsung Galaxy S9. |
Depth | 8.5 mm | 8.7 mm | Samsung Galaxy S9 is narrower than Samsung Galaxy S9. |
Weight | 163 g | 187 g | Samsung Galaxy S9 is lighter than Samsung Galaxy S9. |
Body Colour | Titanium grey | Lilac purple | Midnight black | Coral blue | Prism cube black | Prism cube white | |
Body Material | Metal frame | - | |
Protection | Dustproof, splashproof, waterproof | - | |
Waterproof (Water-resistant) | Yes | - | Samsung Galaxy S9 is waterproof. |
IP rating | IP68 | - | |
SAR Value | 1.08 W/kg (body), 0.63 W/kg (head) | 1.555 W/kg (body), 0.496 W/kg (head) | |
Integrated Components | Heart rate sensor | - | |
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 |
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SIM Card Type (Size) | Nano SIM | Nano SIM | |
SIM Card Qty | Single-SIM | Dual-SIM | |
SIM Card Configuration Details | - | Nano SIM + nano SIM/microSD |
DISPLAY | Samsung Galaxy S9 | Samsung Galaxy A51 5G |
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Display Type | OLED display | OLED display | |
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Display Technology | Quad HD+ Super AMOLED | Infinity-O Super AMOLED | |
Screen Size (Display Size) | 5.8" | 6.5" | Samsung Galaxy A51 5G has larger screen size than Samsung Galaxy S9. |
Screen Resolution (Display Resolution) | 2960 x 1440 pixels | 2400 x 1080 pixels | Samsung Galaxy S9 has better screen resolution than Samsung Galaxy A51 5G. |
Display Format | QHD+ | Full HD+ | |
Pixel Density | 570 ppi | - | |
Aspect Ratio | 18.5:9 | - | |
Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
HDR | Yes | - | Samsung Galaxy S9 has HDR. |
Display Features | Always-on display, Edge Screen, Infinity Display | Edge-to-Edge screen | |
Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | - |
PROCESSOR | Samsung Galaxy S9 | Samsung Galaxy A51 5G |
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Processor Type (CPU) | Qualcomm Snapdragon 845 | - | |
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Processor Number | MSM8998 | - | |
Clock Speed | 2.8 GHz | 2.2 GHz | Samsung Galaxy S9 has higher clock speed than Samsung Galaxy A51 5G. |
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 | - |
MEMORY | Samsung Galaxy S9 | Samsung Galaxy A51 5G |
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RAM | LPDDR4 SDRAM - 4 GB | 6 GB | Samsung Galaxy A51 5G has more RAM than Samsung Galaxy S9. |
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Internal Memory Size (Storage Capacity) | 64 GB | 128 GB | Samsung Galaxy A51 5G has more internal memory than Samsung Galaxy S9. |
User Memory | 48.8 GB | 105.3 GB | |
Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 400 GB | microSDHC, microSDXC - up to 1 TB |
CAMERA | Samsung Galaxy S9 | Samsung Galaxy A51 5G |
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MAIN CAMERA |
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Number of Main Cameras | 1 | 4 | |
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Sensor Resolution | 12 Megapixel | 48 Megapixel | Samsung Galaxy A51 5G has better camera resolution than Samsung Galaxy S9. |
Sensor Size | 1/2.55" | - | |
Lens Aperture | F/1.5 & f/2.4 | F/2.0 | Samsung Galaxy S9 has better lens aperture than Samsung Galaxy S9. |
Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | Samsung Galaxy S9 has optical stabilisation. |
Focus Adjustment | Automatic, manual | Automatic | |
Digital Zoom | 8x | 8x | Both phones have the same digital zoom. |
Self-Timer Delay | Yes | - | |
Special Effects | Motion effect, HDR, Stamp, Bokeh effect, Grid Line, Stickers | Bokeh effect | |
Camera Modes | Panorama, Pro mode, Timer mode, HYPERLAPSE, Auto mode, low-light shots, Food mode, Super Slow-mo, AR Emoji | Slow motion video | |
Face Recognition (Face ID) | Face detection | - | Samsung Galaxy S9 has 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 | 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 480 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 | Live Focus, background blur |
SECOND CAMERA |
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Sensor Resolution (2nd Camera) | - | 12 Megapixel | |
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Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
Lens Aperture (2nd Camera) | - | F/2.2 | |
Field of View (2nd Camera) | - | 123 degree(s) |
THIRD CAMERA |
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Sensor Resolution (3rd Camera) | - | 5 Megapixel | |
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Lens Aperture (3rd Camera) | - | F/2.4 | |
Camera Functions (3rd Camera) | - | Macro camera |
FOURTH CAMERA |
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Sensor Resolution (4th Camera) | - | 5 Megapixel | |
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Lens Aperture (4th Camera) | - | F/2.2 | |
Camera Functions (4th Camera) | - | Depth camera |
FRONT CAMERA |
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Number of Front Cameras | 1 | 1 | |
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Sensor Resolution (Front) | 8 Megapixel | 32 Megapixel | Samsung Galaxy A51 5G has better front camera resolution than Samsung Galaxy S9. |
Sensor Size (Front) | 1/3.6" | - | |
Sensor Type (Front) | CMOS | - | |
Lens Aperture (Front) | F/1.7 | F/2.2 | Samsung Galaxy S9 has better front lens aperture than Samsung Galaxy S9. |
Focus Adjustment | Automatic | Focus free | |
Special Effects (Front) | HDR, Grid Line | - | |
Camera Modes (Front) | Timer mode, wide selfie mode, selfie mode, AR Emoji, selfie focus | - | |
Camera Features (Front) | Quick launch, Motion photo, Stamps, location tags, VDIS (Video Digital Image Stabilization) | - |
BATTERY AND CHARGING | Samsung Galaxy S9 | Samsung Galaxy A51 5G |
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Battery Capacity (Battery Size) | 3000 mAh | 4500 mAh | Samsung Galaxy A51 5G has larger battery capacity than Samsung Galaxy S9. |
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Wireless Charging | Yes | - | Samsung Galaxy S9 can be charged wirelessly. |
Wireless Charging Standards | WPC, PMA | - | |
Standby Time | 326 hours | - | |
Talk Time | 1860 minutes | 1380 minutes | Samsung Galaxy S9 has longer battery life when making calls than Samsung Galaxy A51 5G. |
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 |
Talk (4G): up to 1380 min Active online usage (LTE): up to 16 hrs Active online usage (Wi-Fi): up to 17 hrs Playback (video): up to 19 hrs Playback (audio): up to 86 hrs |
CELLULAR | Samsung Galaxy S9 | Samsung Galaxy A51 5G |
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Technology | TD-SCDMA / WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
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Mobile Broadband Generation | 4G | 5G | Samsung Galaxy A51 5G has more advanced generation mobile network. |
Operating System | Android 8.0 Oreo | - | |
Intelligent Assistant | Bixby | Bixby | |
Payment Technology | Samsung Pay | - | |
Navigation | GPS, GLONASS, BeiDou, Galileo | GPS, GLONASS, BeiDou, Galileo |
COMMUNICATIONS | Samsung Galaxy S9 | Samsung Galaxy A51 5G |
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Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE, VoWiFi | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE, 5G NR FR1 | |
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2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 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 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 20, Band 28, Band 38, Band 40, Band 41 | |
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 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
5G NR Band | - | N41, n78 | |
5G NR Frequency | - | TDD TD 2500, TDD TD 3500 | |
Wireless Interface | IEEE 802.11a/b/g/n/ac, ANT+/ANT | IEEE 802.11a/b/g/n/ac, ANT+ | |
Bluetooth | Bluetooth 5.0 LE | Bluetooth 5.0 | |
Bluetooth Profiles | HFP, HSP, OPP, PAN, A2DP, AVRCP, HID, SAP, PBAP, MAP, HOGP | - | |
NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
Messaging Services | SMS, MMS | SMS, MMS |
MEDIA | Samsung Galaxy S9 | Samsung Galaxy A51 5G |
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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 | WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID | |
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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 | MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 | |
Sound Enhancements | Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, stereo speakers tuned by AKG, Dolby Digital sound | - |
FEATURES | Samsung Galaxy S9 | Samsung Galaxy A51 5G |
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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 | |
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Sensors | Accelerometer, proximity sensor, barometer, gyro sensor, hall sensor, RGB sensor, heart rate, pressure sensor, geomagnetic sensor | Accelerometer, ambient light sensor, gyro sensor, hall sensor, geomagnetic sensor | |
Security Devices | Face recognition, fingerprint reader, eye scan | Fingerprint reader (under display) | |
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 | Fast Charging, Samsung KNOX, Bixby Vision, Bixby Routines, Virtual Proximity Sensing |
OTHERS | Samsung Galaxy S9 | Samsung Galaxy A51 5G |
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Included Accessories | Power adapter, SIM card removal tool, USB Connector (USB-C), micro-USB connector, USB-C cable, headset (tuned by AKG) | Power adapter | |
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Compliant Standards | IP68 | - | |
Max Depth of Water Resistance | 1.5 m | - |