Phone Comparison - Samsung Galaxy Core 2 Duos vs Samsung Galaxy M51 vs Samsung Galaxy A31
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| Manufacturer | Samsung | Samsung | Samsung |
| Announced | June 2014 | 2020, August 31 | 2020, March 24 |
| Status | Available - July 2014 | Coming soon. Exp. release 2020, September 11 | Coming Soon - April 2020 |
| Colors | White, Black | Blue; other colors | Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
130.3 x 68 x 9.8 mm (5.13 x 2.68 x 0.39 in) |
162.6 x 77.5 x 8.5 mm (6.4 x 3.05 x 0.33 in) |
159.3 x 73.1 x 8.6 mm (6.27 x 2.88 x 0.34 in) |
| Weight | 138 g (4.87 oz) | - | 185 g (6.53 oz) |
| SIM Type | - | Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G Network | HSDPA 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | - | LTE | LTE (unspecified) |
| Messaging | SMS, MMS, EMail, IM | ||
| Build Features | - | - Fingerprint Sensor (side-mounted) |
- Fingerprint Sensor (under display, optical) |
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| OS | Android OS, v4.4.2 (KitKat) | Android 10.0 | Android 10.0 |
| User Interface | - | One UI 2.0 | One UI 2.0 |
| Processor | Quad-core 1.2 GHz | Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver), Qualcomm SDM730 Snapdragon 730 (8 nm) | Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55), Mediatek MT6768 Helio P65 (12nm) |
| GPU | - | Adreno 618 | Mali-G52 MC2 |
| RAM | 768 MB | 6 GB | 6 GB |
| Internal Memory | 4 GB | 128 GB | 128 GB |
| External Memory | microSD, up to 64 GB | microSDXC | microSDXC |
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| Type | TFT capacitive touchscreen | FHD+ IPS LCD Capacitive Touchscreen Corning Gorilla Glass 3 |
Super AMOLED Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.5 inches | 6.5 inches | 6.4 inches |
| Resolution | 480 x 800 pixels (207 ppi) | 1080 x 2340 pixels (396 ppi) | 1080 x 2400 pixels (411 ppi) |
| Screen-to-Body Ratio | 65.25% | 82.51% | 85.01% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM Radio | FM radio | - |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592 х 1944 pixels | 64 MP + 12 MP + 5 MP + 5 MP | 48 MP + 8 MP + 5 MP + 5 MP |
| Flash | LED flash | LED Flash | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection | 64 MP, f/2.0, 26mm (wide), 1/1.72", 0.8µm, PDAF 12 MP, f/2.2, (ultrawide) 5 MP, f/2.4, (macro) 5 MP, f/2.2, (depth) Panorama, HDR |
48 MP, f/2.0, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.4, (macro) 5 MP, f/2.4, (depth) panorama, HDR |
| Video | Yes | 4K@30fps, 1080p@30fps | 1080p@30fps |
| Front Camera | Yes, VGA [Similar] |
32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm HDR 1080p@30fps [Similar] |
20 MP, f/2.2, 0.8µm HDR 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 400/50 Mbps | HSPA, LTE-A |
| Bluetooth | Yes, v4.0 with A2DP | 5.0, A2DP, LE | 5.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot |
| USB | Yes, microUSB v2.0 | 2.0, Type-C 1.0 reversible connector | 2.0, Type-C 1.0 reversible connector, USB On-The-Go |
| GPS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS, GLONASS, GALILEO, BDS | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| Browser | HTML | Yes | Yes |
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| Internal | 4 GB, 768 MB RAM | 128 GB, 6 GB RAM | 128 GB, 6 GB RAM or 64 GB, 4 GB RAM (UFS 2.1) |
| Expandable Storage | microSD, up to 64 GB | microSDXC | microSDXC |
| USB OTG | - | Supported | Supported |
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| Fingerprint | |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| NFC | |
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| Type | Li-Ion Battery | Non-removable Li-Po Battery Fast battery charging 25W |
Non-removable Li-Po Battery Fast battery charging 15W |
| Capacity | 2000 mAh | 7000 mAh | 5000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
