Samsung Galaxy A51 (SM-A515F/DS) vs Samsung Galaxy S9 (SM-G960U)
Side by side comparison between Samsung Galaxy A51 vs Samsung Galaxy S9 phones, differences, pros, cons and full specifications. What's the better?
,
6.5"
AMOLED
AMOLED
1080x2400
48
MP
MP
32mp
4GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
vs
5.8"
AMOLED
AMOLED
1440x2960
12.2
MP
MP
8mp
4GB
RAM
RAM
Octa-core
3000
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy S9 (SM-G960U)
The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!
10 Advantages 
20 Advantages | 29 Common items in both devices |
| 4GB LPDDR4X |
| Until 1TB microSD, microSDXC |
| Super AMOLED |
| 60Hz |
| 16 million |
| LED flash |
| Only digital zoom |
| +22 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| Galaxy A51 (SM-A515F/DS) | Galaxy S9 (SM-G960U) | |
| Model | Galaxy A51 (SM-A515F/DS) | Galaxy S9 (SM-G960U) |
| Other model names | Samsung Galaxy A51 SM-A515F/DS | Unlocked Galaxy S9 G960U (Snapdragon) |
| Country or region available |  (Latin America) |  USA |
| Brand | Samsung | Samsung |
| Release date | 12/16/2019, Announced: 12/12/2019 | 3/9/2018, Announced: 2/25/2018 |
| Depth | 7.9 millimeters (0.31 inches) | 8.5 millimeters (0.33 inches) |
| Size (width x height) | 73.6 x 158.5 millimeters (2.9 x 6.24 in) | 68.7 x 147.7 millimeters (2.7 x 5.81 in) |
| Weight | 172 grams (6.02 ounces) | 163 grams (5.71 ounces) |
| Build, materials | Plastic body, glass front | Aluminum frame, glass front/back Back: Gorilla Glass 5 |
| Protection against water and others | Not supported | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant |
📲 Display | ||
| Galaxy A51 (SM-A515F/DS) | Galaxy S9 (SM-G960U) | |
| Display type | Super AMOLED | Super AMOLED |
| Screen size | 6.5" inches | 5.8" inches |
| Screen-to-body ratio | ~87.4% (screen-to-body ratio) | ~84.1% (screen-to-body ratio) |
| Display resolution | 1080x2400 pixels (20:9) | 1440x2960 pixels (18.5:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 405 PPI | 568 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Gorilla Glass 5 |
| Refresh rate | 60Hz | 60Hz |
| Display features | Always-On Display | HDR10 Always-On Display |
🤖 Operating System | ||
| Galaxy A51 (SM-A515F/DS) | Galaxy S9 (SM-G960U) | |
| System version | Android 10 | Android 8.0 Oreo |
| Firmware update | Android 13 | Android 10 |
| User Interface | One UI 2.5 / 3.1 / 4.1 / 5.0 | One UI 2.5 / 3.1 |
⚙️ Processor | ||
| Galaxy A51 (SM-A515F/DS) | Galaxy S9 (SM-G960U) | |
| Chipset | 64bit: Samsung Exynos 9611 (10nm) | 64bit: Qualcomm Snapdragon 845 (SDM845) (10nm) |
| CPU | Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A73 (Quad-core) 4x 1.7GHz ARM Cortex-A53 (Quad-core) | Octa-core, 2 processors: 4x 2.8GHz Kryo 385 Gold (Quad-core) 4x 1.7GHz Kryo 385 Silver (Quad-core) |
| GPU graphical controller | ARM Mali-G72 MP3 (850MHz) | Qualcomm Adreno 630 (710MHz) |
| Performance (benchmark) | AnTuTu: 113051 (v7), 175363 (v8) Geekbench: 5401 (v4.4), 1294 (v5.1) GFXBench: 5.6fps (ES 3.1 onscreen) | AnTuTu: 273972 (v8) Geekbench: 8830 (v4.4) GFXBench: 14fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
| Galaxy A51 (SM-A515F/DS) | Galaxy S9 (SM-G960U) | |
| RAM memory | 4GB LPDDR4X | 4GB LPDDR4X |
| Internal storage | 128GB (107GB available) eMMC 5.1 | 64GB (51GB available) UFS 2.1 |
| External storage | Until 1TB microSD, microSDXC (dedicated slot) | Until 1TB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy A51 (SM-A515F/DS) | Galaxy S9 (SM-G960U) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Not supported |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 600/150 Mbps | 1200/150 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | CDMA 800/1900, GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/1700/1900/2100 | CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat12/13 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66) VoLTE | LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 18, 19, 20, 28, 29, 30) TD-LTE (38, 39, 40, 41) VoLTE |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | GSM 850/900/1800/1900 | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS, EDGE | Not supported |
📷 Camera | ||
| Galaxy A51 (SM-A515F/DS) | Galaxy S9 (SM-G960U) | |
| Back camera (main camera) | (quad camera) 48 megapixels 12MP ultrawide f/2.213mm1.12µm 5MP telephoto f/2.440mm 5MP depth f/2.21/5.0"1.12µm | 12.2 megapixels |
| Main camera resolution | 8000x6000 pixels | 4032x3024 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 30 fps | 4K UHD (3840x2160) 60 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/2.0 (aperture) | f/1.5 (aperture) |
| Focal length | 26mm lens | 26mm lens |
| Sensor size | 1/2" inches | 1/2.55" inches |
| Pixel size | 0.8µm pixel | 1.4µm pixel |
| Autofocus | PDAF: phase detection autofocus | PDAF on back camera and autofocus front camera |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | OIS: Optical stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Not supported | Supported |
| HDR | HDR photo on both cameras | HDR photo/video on both cameras |
| Camera extras | feature not registered | 1080p@240fps 720p@960fps |
📸 Front camera | ||
| Galaxy A51 (SM-A515F/DS) | Galaxy S9 (SM-G960U) | |
| Front camera (secondary) | 32 megapixels | 8 megapixels |
| Front camera resolution | 6528x4896 pixels | 3264x2448 pixels |
| Video recording (secondary) | 4K UHD (3840x2160) | 2K UHD (2560x1440) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.2 (aperture) | f/1.7 (aperture) |
| Focal length | 26mm lens | 25mm lens |
| Sensor size | 1/2.8" inches | 1/3.6" inches |
| Pixel size | 0.8µm pixel | 1.22µm pixel |
🔉 Sound and multimedia | ||
| Galaxy A51 (SM-A515F/DS) | Galaxy S9 (SM-G960U) | |
| Loudspeaker | Supported | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | FM (RDS) | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.265, H.264, H.263, DivX, XviD |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy A51 (SM-A515F/DS) | Galaxy S9 (SM-G960U) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | USB 3.1 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | USB Type-C (reversible) |
| Bluetooth | 5.0 + A2DP/LE | 5.0 + A2DP/LE |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Not supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy A51 (SM-A515F/DS) | Galaxy S9 (SM-G960U) | |
| Sensors | Accelerometer Ambient light sensor ANT+ Compass Face unlock Fingerprint sensor (under display) Gyroscope Hall effect Virtual proximity sensor | Accelerometer Ambient light sensor ANT+ Barometer Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Hall effect Heart rate Iris scanner Proximity sensor SpO2 |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy A51 (SM-A515F/DS) | Galaxy S9 (SM-G960U) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 4000 mAh | 3000 mAh |
| Charger, watts | 15W Wired fast charging | 15W (9V/1.67A) Wired fast charging Quick Charge 2 |
| Inductive / wireless charging | Not supported | Qi wireless charging (Qi/PMA) |
| Talk time autonomy | feature not registered | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Galaxy A51 (SM-A515F/DS) | Galaxy S9 (SM-G960U) | |
| Call control | Voice dialing, Voice recorder | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Prism, Crush Black, White, Blue, Pink | • Colors: Black, Silver, Blue, Gold, Orchid Gray • Samsung DeX • Samsung Gear VR • Samsung Pay |
☢️ Radiation rate | ||
| Galaxy A51 (SM-A515F/DS) | Galaxy S9 (SM-G960U) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.63W/kg (head), 1.59W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | 0.369W/kg (head), 1.59W/kg (body) | feature not registered |