Phone Comparison - Samsung Galaxy A51 vs Xiaomi Redmi Note 9S vs Xiaomi Redmi 9
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| Price Comparison (India) | - | - | |
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| Manufacturer | Samsung | Xiaomi | Xiaomi |
| Announced | December 2019 | March 2020 | Not announced yet |
| Status | Coming Soon - December 12, 2019 | Coming Soon - April 2020 | Coming soon. Exp. release 2020, June |
| Price | Rs. 23,999 ($0.00) [Similarly Priced] | - | - |
| Colors | Prism Crush White, Black, Pink, Blue | Aurora Blue, Glacier White, Interstellar Gray | Ocean Green, Sunset Purple, Carbon Gray |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
158.4 x 73.7 x 7.9 mm (6.24 x 2.9 x 0.31 in) |
165.8 x 76.7 x 8.8 mm (6.53 x 3.02 x 0.35 in) |
163.32 x 77.01 x 9.1 mm (6.43 x 3.03 x 0.36 in) |
| Weight | 172 g (6.07 oz) | 209 g (7.37 oz) | 198 g (6.98 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 | 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 850 / 900 / 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), 20(800), 28(700), 38(2600), 40(2300) | 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), 25(1900), 2628, 32(1500), 38(2600), 39(1900), 40(2300), 41(2500), 66(1700/2100), 71(600) |
| Messaging | |||
| Build Features | - Fingerprint Sensor(In-display) |
- Fingerprint Sensor (side-mounted) Splash-proof |
- Fingerprint Sensor Splash resistant |
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| OS | Android 9.0 (Pie) | Android 10.0 | Android 10.0 |
| User Interface | One UI | MIUI 11 | MIUI 11, upgradable to MIUI 12 |
| Processor | Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm) | Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver), Qualcomm SM7125 Snapdragon 720G (8 nm) | Octa-Core (Dual 2GHz Cortex-A75 + Hexa 2GHz 6x Cortex-A55 CPUs), MediaTek Helio G80 12nm |
| GPU | Mali-G72 MP3 | Adreno 618 | Mali-G52 2EEMC2 |
| RAM | 8 GB | 6 GB | 4 GB |
| Internal Memory | 128 GB | 128 GB | 64 GB |
| External Memory | microSD, up to 512 GB (dedicated slot) | microSDXC (dedicated slot) | microSDXC (dedicated slot) |
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| Type | Full HD+ Infinity-O Super AMOLED Capacitive Touchscreen | FHD+ IPS LCD Capacitive Touchscreen Corning Gorilla Glass 5 450 nits typ. brightness (advertised) |
IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 5 |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 6.5 inches | 6.67 inches | 6.53 inches |
| Resolution | 1080 x 2340 pixels (396 ppi) | 1080 x 2400 pixels (395 ppi) | 1080 x 2340 pixels (395 ppi) |
| Screen-to-Body Ratio | 89.06% | 84.28% | 83.09% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio, recording | Wireless FM radio (no wired headphones required) |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 48 MP + 12 MP + 5 MP + 5 MP | 48 MP + 8 MP + 5 MP + 2 MP | 13 MP + 8 MP + 5 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 |
48 MP, f/1.8, 26mm (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), 1.12µm 2 MP, f/2.4, (depth) HDR, Panorama |
13 MP, f/1.8, (wide), 1/3.1", 1.12µm, PDAF 8 MP, f/2.2, 118° (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) HDR, panorama |
| Video | 2160p@30fps, 1080p@30fps | 2160p@30fps, 1080p@30/60/120fps, 720p@960fps, gyro-EIS | 2160p@30fps, 1080p@30fps, gyro-EIS |
| Front Camera |
32 MP, f/2.0, 25mm (wide) HDR 1080p@30fps [Similar] |
16 MP Punch-Hole, f/2.5, 26mm (wide), 1/3.1", 1.0µm HDR 1080p@30fps [Similar] |
8 MP, f/2.0, (wide), 1/4", 1.12µm HDR 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 | HSPA, 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 | 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, GALILEO, 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, 6 GB RAM or 64 GB, 4 GB RAM (UFS 2.1) | 64 GB, 4 GB RAM or 32 GB, 3 GB RAM |
| Expandable Storage | microSD, up to 512 GB (dedicated slot) | microSDXC (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 18W |
Non-removable Li-Po Battery Fast battery charging 18W |
| Capacity | 4000 mAh | 5020 mAh | 5020 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
Rs. 25,250 
