Phone Comparison - Samsung Galaxy A51 vs Xiaomi Redmi Note 11 vs Oppo A77
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| Price Comparison (India) | - | - | |
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| Manufacturer | Samsung | Xiaomi | Oppo |
| Announced | December 2019 | October 2021 | June 2022 |
| Status | Coming Soon - December 12, 2019 | Coming Soon - November 2021 | Coming Soon - June 2022 |
| Price | Rs. 23,999 ($0.00) [Similarly Priced] | - | - |
| Colors | Prism Crush White, Black, Pink, Blue | Mysterious Black, Milky Way Blue, Mint Green | Ocean Blue, Midnight Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
158.4 x 73.7 x 7.9 mm (6.24 x 2.9 x 0.31 in) |
8.8 mm thickness (0.35 in thickness) |
163.8 x 75.1 x 8 mm (6.45 x 2.96 x 0.31 in) |
| Weight | 172 g (6.07 oz) | 195 g (6.88 oz) | 190 g (6.7 oz) |
| SIM Type | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) | 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 CDMA2000 1xEV-DO |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G Network | LTE (unspecified) | LTE (unspecified) | 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 38, 39, 40, 41, 66 |
| 5G Network | - | SA/NSA | 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 77, 78 SA/NSA |
| Messaging | |||
| Build Features | - Fingerprint Sensor(In-display) |
- Fingerprint Sensor (side-mounted) IP53, dust and splash protection |
- Fingerprint Sensor (side-mounted) IPX4 water resistant |
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| OS | Android 9.0 (Pie) | Android 11 | Android 12 |
| User Interface | One UI | MIUI 12.5 | ColorOS 12.1 |
| Processor | Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm) | Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55), MediaTek Dimensity 810 5G (6 nm) | Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55), MediaTek MT6833P Dimensity 810 (6 nm) |
| GPU | Mali-G72 MP3 | Mali-G57 MC2 | Mali-G57 MC2 |
| RAM | 8 GB | 8 GB | 6 GB |
| Internal Memory | 128 GB | 256 GB | 128 GB |
| External Memory | microSD, up to 512 GB (dedicated slot) | Unspecified | microSDXC |
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| Type | Full HD+ Infinity-O Super AMOLED Capacitive Touchscreen | FHD+ IPS LCD Screen 90Hz Refresh Rate |
HD+ IPS LCD Screen 90Hz Refresh Rate 480 nits (typ), 600 nits (HBM) |
| Colors | 16M colors | 16M Colors | 16M Colors |
| Size | 6.5 inches | 6.6 inches | 6.56 inches |
| Resolution | 1080 x 2340 pixels (396 ppi) | 1080 x 2400 pixels (399 ppi) | 720 x 1612 pixels (269 ppi) |
| Screen-to-Body Ratio | 89.06% | - | 84.12% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | Unspecified | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 48 MP + 12 MP + 5 MP + 5 MP | 50 MP + 8 MP | 48 MP + 2 MP |
| Flash | LED Flash | LED Flash | LED Flash |
| 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 |
50 MP, 26mm (wide), PDAF 8 MP, (ultrawide) HDR, Panorama |
48 MP, f/1.7, 26mm (wide), PDAF 2 MP, f/2.4, (depth) HDR, Panorama |
| Video | 2160p@30fps, 1080p@30fps | Unspecified | 1080p@30fps |
| Front Camera |
32 MP, f/2.0, 25mm (wide) HDR 1080p@30fps [Similar] |
16 MP 1080p@30fps [Similar] |
8 MP, f/2.0, 26mm (wide) Panorama 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE-A | HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G | HSPA 42.2/5.76 Mbps, LTE, 5G |
| Bluetooth | 5.0, A2DP, LE | Yes | 5.3, A2DP, LE, aptX HD |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | Yes | 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 | USB Type-C 2.0, USB On-The-Go | USB Type-C 2.0, 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, GALILEO, QZSS |
| 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 | 256 GB, 8 GB RAM or 128 GB, 8 GB RAM or 128 GB, 6 GB RAM or 128 GB, 4 GB RAM | 128 GB, 6 GB RAM UFS 2.2 |
| Expandable Storage | microSD, up to 512 GB (dedicated slot) | Unspecified | microSDXC |
| 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 33W, 100% in 62 min (advertised) |
Non-removable Li-Po Battery Fast battery Charging 33W, 53% in 30 min (advertised) |
| Capacity | 4000 mAh | 5000 mAh | 5000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
Rs. 25,250 
