Samsung Galaxy A51 vs Samsung Galaxy S9
Here you can compare Samsung Galaxy A51 and Samsung Galaxy S9. Comparing Samsung Galaxy A51 vs Samsung Galaxy S9 on Smartprix enables you to check their respective specs scores and unique features. It would potentially help you understand how Samsung Galaxy A51 stands against Samsung Galaxy S9 and which one should you buy The current lowest price found for Samsung Galaxy A51 is ₹17,999 and for Samsung Galaxy S9 is ₹26,869. The details of both of these products were last updated on Jun 29, 2026.
| Specification | Samsung Galaxy A51 | Samsung Galaxy S9 |
|---|---|---|
| Battery | 4000 mAh, Li-Po Battery | 3000 mAh, Li-ion Battery |
| RAM | 6 GB | 4 GB |
| OS | Android v10, upgradable to v12 | Android v8.0 (Oreo) |
| Display | 6.5 inches, 1080 x 2340 pixels | 5.8 inches, 1440 x 2960 pixels |
| Rear Camera | 48 MP ƒ/2 (Wide Angle) 12 MP ƒ/2.2 (Ultra Wide) 5 MP ƒ/2.4 (Macro) Macro 5 MP ƒ/2.2 (Depth Sensor) | 12 MP |
| Price | ₹17,999 | ₹26,869 |
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Overview
| Specs Score | 53 / 100 Better Specs | 52 / 100 |
| Display Size | 6.5 in Bigger Display | 5.8 in |
| Display Resolution | 1080 x 2340 pixels | 1440 x 2960 pixels Better Resolution |
| RAM | 6 GB More RAM | 4 GB |
| Storage | 128 GB More Storage | 64 GB |
| CPU Clock Speed | 2.3 GHz | 2.8 GHz Faster Clock Speed |
| Rear Camera | 48 MP Quad Better Camera Resolution | 12 MP |
| Front Camera | 32 MP Better Front Camera Resolution | 8 MP |
| Weight | 172 g | 163 g Lighter |
| Thickness | 7.9 mm Slimmer | 8.5 mm |
| Battery | 4000 mAh Bigger Battery | 3000 mAh |
| Unique Features | No No No | Water Resistant NFC Wireless Charging |
General
| Model | Galaxy A51 | Galaxy S9 |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM (Hybrid Slot) |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | January 29, 2020 | February, 2018 |
Design
| Dimensions | 73.6 x 158.5 x 7.9 mm | 68.7 x 147.69 x 8.5 mm |
| Weight | 172 g | 163 g |
Display
| Type | Color Super AMOLED Screen (16M Colors) | Color Super AMOLED Screen (16M colors Colors) |
| Touch | Yes | Yes |
| Size | 6.5 inches, 1080 x 2340 pixels | 5.8 inches, 1440 x 2960 pixels |
| Aspect Ratio | 20:9 | 18.5:9 |
| PPI | ~ 405 PPI | ~ 568 PPI |
| Screen to Body Ratio | ~ 87.4% | ~ 83.6% |
| Features | Corning Gorilla Glass 5 Screen Protection, Curved Display | |
| Notch | Yes, Punch Hole | |
| Curved Display | Yes |
Memory
| RAM | 6 GB | 4 GB |
| Storage | 128 GB | 64 GB |
| Card Slot | Yes, upto 512 GB | Yes, (Hybrid Slot), upto 512 GB |
Connectivity
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| VoLTE | Yes, Dual Stand-By | Yes |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Bluetooth | Yes, v5.0 | Yes, v5.0 |
| USB | Yes, USB-C v2.0 | Yes, USB-C v3.1 |
| USB Features | USB on-the-go, USB Charging |
Extra
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS | Yes, with A-GPS Support |
| Fingerprint Sensor | Yes, In Display | Yes |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Gyro, Proximity, Compass | Accelerometer, Gyroscope, Compass |
| 3.5mm Headphone Jack | Yes | Yes |
| NFC | Yes | |
| Water Resistance | Yes, 1.5 m upto 30 min | |
| IP Rating | IP68 | |
| Dust Resistant | Yes |
Camera
| Rear Camera | 48 MP ƒ/2 (Wide Angle) 12 MP ƒ/2.2 (Ultra Wide) 5 MP ƒ/2.4 (Macro) Macro 5 MP ƒ/2.2 (Depth Sensor) | 12 MP |
| Auto Focus | Yes | Yes, PDAF |
| Features | Panorama, HDR | Face detection, Smile detection, Geo tagging, Panorama, Touch to focus |
| Video Recording | 1080p @ 30 fps FHD | 4K @ 60 fps UHD |
| Flash | Yes, LED | Yes, Dual LED |
| Front Camera | 32 MP ƒ/2.2 (Wide Angle) | 8 MP Autofocus |
| Front Video Recording | 1080p @ 30 fps FHD |
Technical
| OS | Android v10, upgradable to v12 | Android v8.0 (Oreo) |
| Chipset | Samsung Exynos 9611 | Samsung Exynos 9810 |
| CPU | 2.3 GHz, Octa Core Processor | 2.8 GHz, Octa Core Processor |
| Core Details | 4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53 | |
| GPU | Mali-G72 MP3 | Mali-G72 MP18 |
| Java | No | Yes, via 3rd party |
| Browser | Yes, supports HTML5 | Yes, supports HTML5 |
Multimedia
| Supports | MMS, Instant Messaging, Voice Commands | |
| Yes | Yes, with Push Email | |
| Music | Yes | MP3, WAV, eAAC+, FLAC |
| Video | Yes | MP4, DivX, XviD |
| FM Radio | Yes | Yes |
| Document Reader | Yes | Yes |
Battery
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 4000 mAh, Li-Po Battery | 3000 mAh, Li-ion Battery |
| Fast Charging | Yes, 15W Fast Charging | Yes, Quick Charge 2.0 |
| Wireless Charging | Yes |
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