Phone Comparison - Samsung Galaxy A51 vs Samsung Galaxy A71 vs Samsung Galaxy A21
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| Price Comparison (India) | - | - | |
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| Manufacturer | Samsung | Samsung | Samsung |
| Announced | December 2019 | December 2019 | 2020, April 8 |
| Status | Coming Soon - December 12, 2019 | Available. Released 2020, January | Coming soon. Exp. release 2020, April |
| Price | Rs. 23,999 ($0.00) [Similarly Priced] | Rs. 29,999 ($0.00) [Similarly Priced] | - |
| Colors | Prism Crush White, Black, Pink, Blue | Prism Crush White, Black, Pink, Blue | Various |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
158.4 x 73.7 x 7.9 mm (6.24 x 2.9 x 0.31 in) |
163.6 x 76.0 x 7.7 mm (6.44 x 2.99 x 0.3 in) |
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| Weight | 172 g (6.07 oz) | 179 g (6.31 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 only) |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 1700(AWS) / 1900 / 2100 |
| 4G Network | LTE (unspecified) | 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), 28(700), 38(2600), 40(2300), 41(2500), 66(1700/2100) | LTE |
| Messaging | |||
| Build Features | - Fingerprint Sensor(In-display) |
- Fingerprint Sensor(In-display) |
- Fingerprint Sensor Glass front, plastic back, plastic frame |
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| OS | Android 9.0 (Pie) | Android 10.0 | Android 10.0 |
| User Interface | One UI | One UI 2.0 | One UI 2.0 |
| Processor | Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm) | Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver), Qualcomm SDM730 Snapdragon 730 (8 nm) | Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53), Mediatek MT6765 Helio P35 (12nm) |
| GPU | Mali-G72 MP3 | Adreno 618 | PowerVR GE8320 |
| RAM | 8 GB | 8 GB | 3 GB |
| Internal Memory | 128 GB | 128 GB | 64 GB |
| External Memory | microSD, up to 512 GB (dedicated slot) | microSD, up to 512 GB (dedicated slot) | microSDXC (dedicated slot) |
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| Type | Full HD+ Infinity-O Super AMOLED Capacitive Touchscreen | Full HD+ Infinity-O Super AMOLED Capacitive Touchscreen | HD+ Super AMOLED Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 6.5 inches | 6.7 inches | 6.5 inches |
| Resolution | 1080 x 2340 pixels (396 ppi) | 1080 x 2400 pixels (393 ppi) | 720 x 1600 pixels (270 ppi) |
| Screen-to-Body Ratio | 89.06% | 87.08% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio | FM radio |
| 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 + 12 MP + 5 MP + 5 MP | 16 MP + 8 MP + 2 MP + 2 MP |
| Flash | LED Flash | LED Flash | No |
| Features | 48 MP, f/1.8, (wide), 1/2", 0.8µm, PDAF 12 MP, f/2.2, 13mm (ultrawide) 5 MP, f/2.2, depth sensor 5 MP, f/2.4, macro camera Panorama, HDR |
64 MP, f/1.8, (wide), 1/2", 0.8µm, PDAF 12 MP, f/2.2, 13mm (ultrawide) 5 MP, f/2.2, depth sensor 5 MP, f/2.4, macro camera Panorama, HDR |
16 MP, f/1.9, 28mm (wide), AF 8 MP, f/2.2, 12mm (ultrawide) 2 MP, (macro) 2 MP, (depth) panorama, HDR |
| Video | 2160p@30fps, 1080p@30fps | 2160p@30fps, 1080p@30/60/240fps, 1080p@960fps; gyro-EIS | 1080p@30fps |
| Front Camera |
32 MP, f/2.0, 25mm (wide) HDR 1080p@30fps [Similar] |
32 MP, f/2.0, 25mm (wide) HDR 1080p@30fps [Similar] |
13 MP HDR 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE-A | HSPA, LTE-A | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| 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 b/g/n, 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 | 2.0, Type-C 1.0 reversible connector, USB On-The-Go |
| 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 or 64 GB, 4 GB RAM | 128 GB, 8 GB RAM | 64 GB, 3 GB RAM eMMC 5.1 |
| Expandable Storage | microSD, up to 512 GB (dedicated slot) | microSD, up to 512 GB (dedicated slot) | microSDXC (dedicated slot) |
| USB OTG | Supported | Supported | 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 | 4000 mAh | 4000 mAh | 4000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
Rs. 25,250 
