Phone Comparison - Samsung Galaxy S7 vs Xiaomi Redmi Note 8 Pro vs Samsung Galaxy A21
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| Price Comparison (India) | - | ||
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| Manufacturer | Samsung | Xiaomi | Samsung |
| Announced | February 2016 | August 2019 | 2020, April 8 |
| Status | Available - March 2016 | Coming Soon - October 2019 | Coming soon. Exp. release 2020, April |
| Price | Rs. 43,400 ($638.24) [Similarly Priced] | Rs. 14,999 ($0.00) [Similarly Priced] | - |
| Colors | Black, Gold, Silver | Gamma Green, Halo White, Shadow Black | Various |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
142.4 x 69.6 x 7.9 mm (5.61 x 2.74 x 0.31 in) |
161.3 × 76.4 × 8.79 mm (6.35 × 3.01 × 0.35 in) |
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| Weight | 152 g (5.36 oz) | 199.8 g (7.02.0.28 oz) | - |
| SIM Type | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, Dual Stand-by) | Hybrid 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 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM only) |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700 / 1900 / 2100 |
HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 1700(AWS) / 1900 / 2100 |
| 4G Network | LTE | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 40(2300), 41(2500) | LTE |
| Messaging | SMS, MMS, EMail, IM | ||
| Build Features | - Heart rate sensor - Fingerprint sensor - IP68 certified - dust and water resistant - Water resistant up to 1 meter and 30 minutes |
- Fingerprint Sensor |
- Fingerprint Sensor Glass front, plastic back, plastic frame |
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| OS | Android OS, v6.0 (Marshmallow) | Android 9.0 (Pie) | Android 10.0 |
| User Interface | TouchWiz UI | MIUI 10 | One UI 2.0 |
| Processor | Quad-core (2x 2.15 GHz Kryo & 2x 1.6 GHz Kryo)/ Octa-core (4x2.3 GHz Mongoose & 4x1.6 GHz Cortex-A53) , Qualcomm MSM8996 Snapdragon 820/ Exynos 8 Octa 8890 | Octa core (2.05 GHz, Dual core, Cortex A76 + 2 GHz, Hexa Core, Cortex A55), MediaTek Helio G90T | Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53), Mediatek MT6765 Helio P35 (12nm) |
| GPU | Adreno 530/ Mali-T880 MP12 | Mali-G76 MP4 | PowerVR GE8320 |
| RAM | 4 GB | 8 GB | 3 GB |
| Internal Memory | 32/64 GB | 128 GB | 64 GB |
| External Memory | microSD, up to 2 TB | microSD, up to 256 GB | microSDXC (dedicated slot) |
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| Type | Super AMOLED Capacitive Touchscreen, Corning Gorilla Glass 5, Always-on display | Full HD+ LCD Capacitive Touchscreen, Corning Gorilla Glass protection | HD+ Super AMOLED Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.1 inches | 6.53 inches | 6.5 inches |
| Resolution | 1440 x 2560 pixels (576 ppi) | 1080 x 2340 pixels (395 ppi) | 720 x 1600 pixels (270 ppi) |
| Screen-to-Body Ratio | 72.33% | - | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | - | FM radio, recording | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | Dual Pixel 12 MP, 4608 x 2592 pixels | 64 MP + 8 MP + 2 MP + 2 MP | 16 MP + 8 MP + 2 MP + 2 MP |
| Flash | Dual-LED (Dual Tone) | Dual-LED Flash | No |
| Features | Phase Detection Autofocus, f/1.7, 1/2.6' Sensor Size, 1 µm Pixel Size,Smart Optical Image Stablization, Geo-tagging, Touch Focus, Face Detection, Auto HDR, Panorama | 64 MP, f/1.8, (wide), 1/1.7", 0.8µm, PDAF 8 MP, f/2.2, 13mm (ultrawide), 1/4", 1.12µm 2 MP, f/2.4, 1/5", 1.75µm (dedicated macro camera) 2 MP, f/2.4, 1/5", 1.75µm, depth sensor HDR, Panorana |
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@60fps, 720p@120fps, HDR, dual-video rec. | 2160p@30fps, 1080p@30/60/120fps, (gyro-EIS) | 1080p@30fps |
| Front Camera | 5 MP, f/1.7, Dual Video Call, Auto HDR [Similar] |
20 MP, f/2.0, 0.9µm HDR 1080p@30fps [Similar] |
13 MP HDR 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA 42.2/5.76 Mbps, LTE Cat9 450/50 Mbps | HSPA 42.2/5.76 Mbps, LTE-A (3CA) Cat9 450/50 Mbps | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Bluetooth | v4.2, A2DP, LE, apt-X | 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 | microUSB v2.0, USB Host | 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, BDS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS, BDS |
| Browser | HTML5 | Yes | Yes |
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| Internal | 32/64 GB, 4 GB RAM | 128 GB, 8 GB RAM or 128 GB, 6 GB RAM or 64 GB, 6 GB | 64 GB, 3 GB RAM eMMC 5.1 |
| Expandable Storage | microSD, up to 2 TB | microSD, up to 256 GB | microSDXC (dedicated slot) |
| USB OTG | Supported | Yes | 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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| Barometer Sensor | |
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| Heart-rate Sensor | |
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| NFC | |
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| Type | Non-removable Li-Po Battery | Non-removable Li-Po Battery Fast battery charging 18W (Quick Charge 4) |
Non-removable Li-Po Battery Fast battery charging 15W |
| Capacity | 3000 mAh | 4500 mAh | 4000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
Rs. 43,400 
Rs. 43,400 
Rs. 43,400 
