Samsung Galaxy A51 vs Galaxy A25
Here we compared two mid-range smartphones: the 6.5-inch Samsung Galaxy A51 (with Exynos 9 Octa 9611) that was released on December 12, 2019, against the Samsung Galaxy A25, which is powered by Exynos 1280 and came out 4 years after. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.
Key differences
Reasons to consider the Samsung Galaxy A51
- Slow-motion recording at 960FPS
- Weighs 25 grams less
- The front-facing camera can record video at 4K
Reasons to consider the Samsung Galaxy A25
- Higher display refresh rate – 120 Hz
- 74% better performance in AnTuTu Benchmark (480K versus 276K)
- Comes with 1000 mAh larger battery capacity: 5000 vs 4000 mAh
- Delivers 63% higher peak brightness (1038 against 637 nits)
- Newer Bluetooth version (v5.3)
- Optical image stabilization
- More energy-efficient CPU – Exynos 1280
- The phone is 4 years newer
- Stereo speakers
- Has 33% more RAM: 8GB versus 6GB
- More recent OS version: Android 14 versus 13
- Supports higher wattage charging (25W versus 15W)
Review
Display
Screen quality, color accuracy, brightness
Camera
Photo and video recording quality
Performance
CPU and memory performance (apps, system)
Gaming
Capabilities for playing modern games
Battery
Battery life, charging type and speed
Connectivity
Networks, ports, data transmission
Choose the importance of each parameter to more accurately identify the smartphone that best meets your particular needs.
Tests and specifications
Comparison table of technical specifications and testsDisplay
| Type | Super AMOLED | Super AMOLED |
| Size | 6.5 inches | 6.5 inches |
| Resolution | 1080 x 2400 pixels | 1080 x 2340 pixels |
| Aspect ratio | 20:9 | 19.5:9 |
| PPI | 405 ppi | 396 ppi |
| Refresh rate | 60 Hz | 120 Hz |
| Adaptive refresh rate | No | No |
| Max rated brightness | 400 nits | 1000 nits |
| HDR support | No | No |
| Screen protection | Corning Gorilla Glass 3 | Corning Gorilla Glass 5 |
| Screen-to-body ratio | 87.5% | 84.2% |
| Display features | - Always-On Display | - DCI-P3 - Always-On Display |
| RGB color space | 98.8% | 145.1% |
| PWM | 242 Hz | 119 Hz |
| Response time | 25 ms | 1 ms |
| Contrast | ∞ Infinity | ∞ Infinity |
Peak brightness test (auto)
Design and build
| Height | 158.5 mm (6.24 inches) | 161 mm (6.34 inches) |
| Width | 73.6 mm (2.9 inches) | 76.5 mm (3.01 inches) |
| Thickness | 7.9 mm (0.31 inches) | 8.3 mm (0.33 inches) |
| Weight | 172 g (6.07 oz) | 197 g (6.95 oz) |
| Waterproof | No | No |
| Rear material | Plastic | Plastic |
| Frame material | Plastic | Plastic |
| Colors | White, Black | Black, Blue, Yellow |
| Fingerprint scanner | Yes, in-display | Yes, in-button |
Screen-to-body ratio
Performance
| Chipset | Samsung Exynos 9 Octa 9611 | Samsung Exynos 1280 |
| Max clock | 2300 MHz | 2400 MHz |
| CPU cores | 8 (4 + 4) | 8 (2 + 6) |
| Architecture | - 4 cores at 1.7 GHz: Cortex-A53 - 4 cores at 2.3 GHz: Cortex-A73 | - 6 cores at 2 GHz: Cortex-A55 - 2 cores at 2.4 GHz: Cortex-A78 |
| Manufacturing | Samsung | Samsung |
| Lithography process | 10 nanometers | 5 nanometers |
| Neural processor (NPU) | Yes | Yes |
| Graphics | Mali-G72 MP3 | Mali-G68 MP4 |
| GPU shading units | 54 | 256 |
| GPU clock | 850 MHz | 972 MHz |
| FLOPS | ~113.8 GFLOPS | ~487 GFLOPS |
Benchmarks
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
AnTuTu Benchmark 10
| CPU | 88502 | 158444 |
| GPU | 44652 | 105626 |
| Memory | 66723 | 89882 |
| UX | 76384 | 126611 |
| Total score | 276261 | 480563 |
| Samples | [19 tests] | [21 tests] |
3DMark Wild Life Performance
| Max surface temperature | 42.2 °C | 45.6 °C |
| Stability | 95% | - |
| Graphics test | 4 FPS | - |
| Graphics score | 812 | - |
Memory
| RAM size | 4, 6 GB | 6, 8 GB |
| Memory type | LPDDR4X | LPDDR4X |
| Memory clock | 1866 MHz | 2133 MHz |
| Channels | 2 | 2 |
| Storage size | 64, 128 GB | 128, 256 GB |
| Storage type | UFS 2.0 | UFS 2.2 |
| Memory card | MicroSD | MicroSD |
| Memory card max size | Up to 512 GB | Up to 1024 GB |
Software
| Operating system | Android 10 (Can be upgraded to Android 13) | Android 14 |
| ROM | One UI 5.1 | One UI 6 |
| OS size | 23 GB | 20 GB |
Battery
| Capacity | 4000 mAh | 5000 mAh |
| Max charge power | 15 W | 25 W |
| Battery type | Li-Po | Li-Ion |
| Replaceable | No | No |
| Wireless charging | No | No |
| Reverse charging | No | No |
| Fast charging | Yes (40% in 35 min) | Yes (49% in 30 min) |
| Full charging time | 1:50 hr | 1:24 hr |
| Web browsing | 07:15 hr | 06:44 hr |
| Watching video | 11:25 hr | 11:34 hr |
| Gaming | 04:49 hr | 04:52 hr |
| Standby | 81 hr | 91 hr |
General battery life
Main camera
| Matrix | 48 megapixels | 50 megapixels |
| Image resolution | 8000 x 6000 | 8160 x 6120 |
| Zoom | Digital | Digital |
| Flash | LED | LED |
| Stabilization | Digital | Optical |
| 8K video recording | No | No |
| 4K video recording | Up to 30FPS | Up to 30FPS |
| 1080p video recording | Up to 30FPS | Up to 60FPS |
| Slow motion | 960 FPS (720p) | 240 FPS (720p) |
| Angle of widest lens | 120° | 120° |
| Lenses | 1) Standard: 48 MP 2) Ultrawide: 12 MP 3) Macro: 5 MP 4) Depth: 5 MP | 1) Standard: 50 MP 2) Ultrawide: 8 MP 3) Macro: 2 MP |
| Camera features | - Bokeh mode - Pro mode | - Bokeh mode - Pro mode |
| Image resolution | 48 MP | 50 MP |
| Aperture | f/2.0 | f/1.8 |
| Focal length | 26 mm | 27 mm |
| Sensor | Sony IMX582 | Samsung ISOCELL S5KJN1 |
| Sensor size | 1/2" | 1/2.76" |
| Pixel size | 0.8 micron | 0.64 micron |
| Autofocus | Phase autofocus | Phase autofocus |
| Stabilization | Digital | Optical |
| Image resolution | 12 MP | 8 MP |
| Aperture | f/2.2 | f/2.2 |
| Focal length | 13 mm | - |
| Sensor | - | Samsung ISOCELL (S5K)4HA |
| Sensor size | - | 1/4" |
| Pixel size | 1.12 micron | 1.12 micron |
| Stabilization | Digital | Digital |
| Image resolution | 5 MP | 2 MP |
| Aperture | f/2.4 | f/2.4 |
| Focal length | 40 mm | - |
| Sensor | - | GalaxyCore GC02M1 |
| Pixel size | 1.12 micron | - |
| Stabilization | Digital | No |
Selfie camera
| Megapixels | 32 megapixels | 13 megapixels |
| Image resolution | 6560 x 4928 | 4160 x 3120 |
| Aperture | f/2.2 | f/2.2 |
| Focal length | 26 mm | - |
| Sensor | Samsung S5KGD1 | Hynix Hi-1339 |
| Sensor size | 1/2.8" | 1/3.06" |
| Pixel size | 0.8 micron | 1.12 micron |
| Autofocus | No | No |
| Stabilization | Digital | Digital |
| Video resolution | 2160p (4K) at 30 FPS | 1080p (Full HD) at 30 FPS |
| Depth sensor (TOF 3D) | No | No |
Connectivity
| Wi-Fi standard | Wi-Fi 5 (802.11 b/g/n/ac) | Wi-Fi 5 (802.11 a/b/g/n/ac) |
| Wi-Fi features | - Dual Band - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display | - Dual Band - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
| Bluetooth version | 5 | 5.3 |
| Bluetooth features | PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP | LE |
| USB type | USB Type-C | USB Type-C |
| USB version | 2 | 2 |
| USB features | - Charging - USB-Storage mode - OTG | - Charging - USB-Storage mode - OTG |
| GPS | GPS, GLONASS, Beidou, Galileo | GPS, GLONASS, Beidou, Galileo |
| NFC* | Yes | Yes |
| Infrared port | No | No |
| Number of SIM* | 2 | 2 |
| Type of SIM card | Nano | Nano |
| Multi SIM mode | Standby | Standby |
| eSIM support* | No | No |
| Hybrid slot | No | Yes |
| LTE Cat* | 12 | 18 |
| 5G support | No | Yes |
Sound
| Speakers | Mono | Stereo |
| Headphone audio jack | Yes | Yes |
| FM radio | Yes | No |
| Dolby Atmos | Yes | Yes |
Speakers test
Max loudness
Other
| Category | Mid-range | Mid-range |
| Announced | December 2019 | December 2023 |
| Release date | December 2019 | December 2023 |
| Launch price | $399 | $299 |
| SAR (head) | 0.596 W/kg | 0.46 W/kg |
| SAR (body) | 1.45 W/kg | 1.19 W/kg |
| Sensors | - Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint | - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
| Bundled charger | - | Not included |
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

