Samsung Galaxy A51 vs Galaxy A31
38
out of 100
VS
40
out of 100
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 A31, which is powered by Mediatek Helio P65 and came out 3 months after. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.
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Key differences
Reasons to consider the Samsung Galaxy A51
- Slow-motion recording at 960FPS
- Ability to record video in 4K resolution
- 23% better performance in AnTuTu Benchmark (352K versus 286K)
- More recent OS version: Android 13 versus 12
- Faster storage type - UFS 2.0 versus eMMC 5.1
- More energy-efficient CPU β Exynos 9 Octa 9611
- The front-facing camera can record video at 4K
Reasons to consider the Samsung Galaxy A31
- Shows 42% longer battery life (25:27 vs 17:53 hours)
- Comes with 1000 mAh larger battery capacity: 5000 vs 4000 mAh
- 11% faster in single-core GeekBench 6 test: 414 and 372 points
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
Scores with a red asterisk (*) are approximate and may change in the future as we gather more data.
Select your primary usage scenario to get a more accurate NanoReview Score
Value for money (Beta)
Tests and specifications
Comparison table of technical specifications and testsDisplay
| Type | Super AMOLED | Super AMOLED |
| Size | 6.5 inches | 6.4 inches |
| Resolution | 1080 x 2400 pixels | 1080 x 2400 pixels |
| Aspect ratio | 20:9 | 20:9 |
| PPI | 405 ppi | 411 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Adaptive refresh rate | No | No |
| Max rated brightness | 400 nits | 600 nits |
| HDR support | No | No |
| Screen protection | Corning Gorilla Glass 3 | Tempered glass |
| Screen-to-body ratio | 87.5% | 84.9% |
| Display features | - Always-On Display | - Always-On Display |
| RGB color space | 98.8% | 96.8% |
| PWM | 242 Hz | 238 Hz |
| Response time | 25 ms | 8 ms |
| Contrast | β Infinity | β Infinity |
Peak brightness test (auto)
Design and build
| Height | 158.5 mm (6.24 inches) | 159.3 mm (6.27 inches) |
| Width | 73.6 mm (2.9 inches) | 73.1 mm (2.88 inches) |
| Thickness | 7.9 mm (0.31 inches) | 8.6 mm (0.34 inches) |
| Weight | 172 g (6.07 oz) | 185 g (6.53 oz) |
| Waterproof | No | No |
| Rear material | Plastic | Plastic |
| Frame material | Plastic | Plastic |
| Colors | White, Black | White, Black, Blue, Red |
| Fingerprint scanner | Yes, in-display | Yes, in-display |
Screen-to-body ratio
Performance
| Chipset | Samsung Exynos 9 Octa 9611 | Mediatek Helio P65 |
| Max clock | 2300 MHz | 2000 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 1.7 GHz: Cortex-A55 - 2 cores at 2 GHz: Cortex-A75 |
| Manufacturing | Samsung | TSMC |
| Lithography process | 10 nanometers | 12 nanometers |
| Neural processor (NPU) | Yes | Yes |
| Graphics | Mali-G72 MP3 | Arm Mali-G52 2EEMC2 |
| GPU shading units | 36 | 48 |
| GPU clock | 850 MHz | 820 MHz |
| FLOPS | ~61.2 GFLOPS | ~78.7 GFLOPS |
Benchmarks
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
Compute Score (GPU)
| Compute Score (GPU) | 745 | 968 |
| Single-core score | 372 | 414 |
| Multi-core score | 1204 | 1183 |
AnTuTu Benchmark 11
| CPU | 135389 | 126654 |
| GPU | 30103 | 16593 |
| Memory | 90583 | 65117 |
| UX | 96624 | 77682 |
| Total score | 352699 | 286046 |
| Samples | [10 tests] | [4 tests] |
Recent User Tests
Samsung Galaxy A51
| Date | Benchmark | Result |
|---|---|---|
| π 2026-08-30 (Aginves) | AnTuTu 11 | 357049 |
| π 2026-08-28 (ROBIZ) | AnTuTu 11 | 331364 |
| π 2026-07-15 (Somya Lohiya) | AnTuTu 11 | 298360 |
| π 2026-06-20 (14burgos) | AnTuTu 11 | 393276 |
| π 2026-06-15 (Robiz) | AnTuTu 11 | 302904 |
Samsung Galaxy A31
| Date | Benchmark | Result |
|---|---|---|
| π 2026-05-05 (ΠΠΌΠΈΡΡΠΈΠΉ) | AnTuTu 11 | 285204 |
| π 2026-05-01 -> Kntbekovvdkg | AnTuTu 11 | 241611 |
| π 2025-12-28 (Π§ΠΠΠΠ) | AnTuTu 11 | 286046 |
| π 2025-10-30 (Todoshi) | AnTuTu 11 | 290447 |
| π 2024-04-18 (samueltails) | Geekbench 6 GPU | 968 |
Memory
| RAM size | 4 GB | 4 GB |
| Memory type | LPDDR4X | LPDDR4X |
| Memory clock | 1866 MHz | 1866 MHz |
| Channels | 2 | 2 |
| Storage size | 64 GB | 64 GB |
| Storage type | UFS 2.0 | eMMC 5.1 |
| Memory card | MicroSD | MicroSD |
| Memory card max size | Up to 512 GB | Up to 512 GB |
Software
| Operating system | Android 10 (Can be upgraded to Android 13) | Android 10 (Can be upgraded to Android 12) |
| ROM | One UI 5.1 | One UI 4.1 |
| OS size | 23 GB | 27 GB |
| OS updates | 2 years | 2 years |
| Security updates | 4 years | 4 years |
Battery
| Capacity | 4000 mAh | 5000 mAh |
| Max charge power | 15 W | 15 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, Samsung Adaptive Fast Charge (50% in 60 min) |
| Full charging time | 1:50 hr | 2:25 hr |
| Web browsing | 07:15 hr | 10:26 hr |
| Watching video | 11:25 hr | 14:36 hr |
| Gaming | 04:49 hr | 05:44 hr |
| Standby | 81 hr | 126 hr |
General battery life
Main camera
| Matrix | 48 megapixels | 48 megapixels |
| Image resolution | 8000 x 6000 | 8000 x 6000 |
| Zoom | Digital | Digital |
| Flash | LED | LED |
| Stabilization | Digital | Digital |
| 8K video recording | No | No |
| 4K video recording | Up to 30FPS | No |
| 1080p video recording | Up to 30FPS | Up to 30FPS |
| Slow motion | 960 FPS (720p) | No |
| Angle of widest lens | 120Β° | 123Β° |
| Lenses | 1) Standard: 48 MP 2) Ultrawide: 12 MP 3) Macro: 5 MP 4) Depth: 5 MP |
1) Standard: 48 MP 2) Ultrawide: 8 MP 3) Macro: 5 MP 4) Depth: 5 MP |
| Camera features | - Bokeh mode - Pro mode |
- Bokeh mode - Pro mode |
| Image resolution | 48 MP | 48 MP |
| Aperture | f/2.0 | f/2.0 |
| Focal length | 26 mm | 26 mm |
| Sensor | Sony IMX582 | Samsung S5KGM2 |
| Sensor size | 1/2" (β 0.5 inch) | 1/2.0" (β 0.5 inch) |
| Pixel size | 0.8 micron | 0.8 micron |
| Autofocus | Phase autofocus | Phase autofocus |
| Stabilization | Digital | Digital |
| Image resolution | 12 MP | 8 MP |
| Aperture | f/2.2 | f/2.2 |
| Focal length | 13 mm | 13 mm |
| Sensor size | - | 1/4.0" (β 0.25 inch) |
| Pixel size | 1.12 micron | 1.12 micron |
| Stabilization | Digital | Digital |
| Image resolution | 5 MP | 5 MP |
| Aperture | f/2.4 | f/2.4 |
| Focal length | 40 mm | - |
| Pixel size | 1.12 micron | - |
| Stabilization | Digital | No |
Selfie camera
| Megapixels | 32 megapixels | 20 megapixels |
| Image resolution | 6560 x 4928 | 5963 x 3354 |
| Aperture | f/2.2 | f/2.2 |
| Focal length | 26 mm | - |
| Sensor | Samsung S5KGD1 | CMOS |
| Sensor size | 1/2.8" (β 0.36 inch) | - |
| Pixel size | 0.8 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 |
| Bluetooth version | 5 | 5 |
| Bluetooth features | PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP | PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP |
| 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 | No |
| LTE Cat* | 12 | 12 |
| 5G support | No | No |
Sound
| Speakers | Mono | Mono |
| Headphone audio jack | Yes | Yes |
| FM radio | Yes | Yes |
| Dolby Atmos | Yes | Yes |
Speakers test
Max loudness
Other
| Category | Mid-range | Mid-range |
| Announced | December 2019 | March 2020 |
| Release date | December 2019 | April 2020 |
| Launch price (MSRP) | $399 | $210 |
| Successor | - Samsung Galaxy A57 5G | - Samsung Galaxy A37 5G |
| SAR (head) | 0.596 W/kg | 0.49 W/kg |
| SAR (body) | 1.45 W/kg | 1.68 W/kg |
| Sensors | - Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
- Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.
Conclusion
If the battery life is more important to you, then choose the Samsung Galaxy A31. But if the camera, performance, and software are more of a priority β go for the Samsung Galaxy A51.
Cast your vote
Total votes: 3369
