Phone Comparison - Samsung Galaxy A51 5G vs Samsung Galaxy A72 vs Samsung Galaxy M21s
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| Manufacturer | Samsung | Samsung | Samsung |
| Announced | April 2020 | 2021, March 17 | November 2020 |
| Status | Coming Soon - April 2020 | Coming soon. Exp. release 2021, March 26 | Available - November 2020 |
| Colors | Prism Cube Black, Prism Cube White, Prism Cube Pink | Awesome Black, Awesome White, Awesome Violet, Awesome Blue | Blue, Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
158.9 x 73.6 x 8.7 mm (6.26 x 2.9 x 0.34 in) |
165 x 77.4 x 8.4 mm (6.5 x 3.05 x 0.33 in) |
159.2 x 75.1 x 8.9 mm (6.27 x 2.96 x 0.35 in) |
| Weight | 187 g (6.6 oz) | 203 g (7.16 oz) | 191 g (6.74 oz) |
| SIM Type | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM), 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 (dual-SIM model only) | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G Network | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 20(800), 26(850), 28(700), 38(2600), 40(2300), 41(2500), 66(1700/2100) | LTE | LTE |
| 5G Network | 5G SA/NSA | - | - |
| Messaging | |||
| Build Features | - Fingerprint Sensor (under display, optical) |
- Fingerprint Sensor (under display, optical) |
- Fingerprint Sensor |
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| OS | Android 10.0 | Android 11 | Android 10 |
| User Interface | One UI 2.0 | One UI 3.0 | One UI 2.5 |
| Processor | Octa-core (2x2.2 GHz Cortex-A77 & 6x1.8 GHz Cortex A55), Exynos 980 (8 nm) | Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver), Qualcomm SM7125 Snapdragon 720G (8 nm) | Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm) |
| GPU | Mali-G76 MP5 | Adreno 618 | Mali-G72 MP3 |
| RAM | 8 GB | 8 GB | 4 GB |
| Internal Memory | 128 GB | 128 GB | 128 GB |
| External Memory | microSDXC (dedicated slot) | microSDXC (dedicated slot) | microSDXC |
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| Type | Super AMOLED Capacitive Touchscreen Corning Gorilla Glass 3 |
FHD+ Super AMOLED Screen 90Hz Refresh Rate 800 nits (peak) Corning Gorilla Glass 5 |
Super AMOLED Screen, 420 nits (typ), Corning Gorilla Glass 3 |
| Colors | 16M colors | 16M Colour | 16M Colour |
| Size | 6.5 inches | 6.7 inches | 6.4 inches |
| Resolution | 1080 x 2400 pixels (405 ppi) | 1080 x 2400 pixels (393 ppi) | 1080 x 2340 pixels (403 ppi) |
| Screen-to-Body Ratio | 87.17% | 84.78% | 83.97% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | Unspecified | FM radio, RDS, recording |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 48 MP + 12 MP + 5 MP + 5 MP | 64 MP + 8 MP + 12 MP + 2 MP | 64 MP + 8 MP + 5 MP |
| Flash | LED flash | LED flash | LED Flash |
| Features | 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 12 MP, f/2.2, 12mm (ultrawide) 5 MP, f/2.4, 25mm (macro), 1/5.0", 1.12µm 5 MP, f/2.2, (depth) HDR, panorama |
64 MP, f/1.8, 26mm (wide), PDAF, OIS 8 MP, f/2.4, (telephoto), PDAF, OIS, 3x optical zoom 12 MP, f/2.2, 123˚ (ultrawide) 5 MP, f/2.4, (macro) panorama, HDR |
64 MP, (wide), PDAF 8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.2, (depth) Panorama, HDR |
| Video | 2160p@30fps, 1080p@30/120fps; gyro-EIS | 4K@30fps, 1080p@30/120fps; gyro-EIS | 4K@30fps, 1080p@30fps, gyro-EIS |
| Front Camera |
32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm HDR 1080p@30fps [Similar] |
32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm HDR 1080p@30fps [Similar] |
32 MP, f/2.4, (wide), 1/2.8", 0.8µm HDR 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE-A, 5G | HSPA 42.2/5.76 Mbps, LTE-A | HSPA 42.2/5.76 Mbps, LTE-A |
| Bluetooth | 5.0, A2DP, LE | 5.0, A2DP, LE | 5.0, A2DP, LE |
| Wi-Fi | 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 | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot |
| USB | 2.0, Type-C 1.0 reversible connector, USB On-The-Go | 2.0, Type-C 1.0 reversible connector, USB On-The-Go | USB Type-C 2.0 |
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS | Yes, with A-GPS, GLONASS, GALILEO, BDS | Yes, with A-GPS, GLONASS, BDS |
| Browser | Yes | Yes | Yes |
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| Internal | 128 GB, 8 GB RAM or 128 GB, 6 GB RAM (UFS 2.0) | 128 GB, 8 GB RAM or 128 GB, 6 GB RAM (UFS 2.1) | 128 GB, 4 GB RAM or 64 GB, 4 GB RAM |
| Expandable Storage | microSDXC (dedicated slot) | microSDXC (dedicated slot) | microSDXC |
| USB OTG | Supported | Supported | Not Supported |
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| Fingerprint | |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| Magnetic-Field Sensor (Compass) | |
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| Gyroscope Sensor | |
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| NFC | |
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| Type | Non-removable Li-Po Battery Fast battery charging 15W |
Non-removable Li-Po Battery Fast battery charging 25W |
Non-removable Li-Po Battery Fast battery charging 15W |
| Capacity | 4500 mAh | 5000 mAh | 6000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
