Phone Comparison - Samsung Galaxy S8 vs Samsung Galaxy S9 vs Samsung Galaxy A51
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| Price Comparison (India) | - | ||
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| Manufacturer | Samsung | Samsung | Samsung |
| Announced | March 2017 | February 2018 | December 2019 |
| Status | Available - April 2017 | Coming Soon, March 2018 | Coming Soon - December 12, 2019 |
| Price | Rs. 57,900 ($720.00) [Similarly Priced] | Rs. 52,999 ($750.00) [Similarly Priced] | Rs. 23,999 ($0.00) [Similarly Priced] |
| Colors | Black, White, Gold, Silver, Pink Gold | Various | Prism Crush White, Black, Pink, Blue |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
148.9 x 68.1 x 8 mm (5.86 x 2.68 x 0.31 in) |
147.7 x 68.7 x 8.5 mm (5.81 x 2.7 x 0.33 in) |
158.4 x 73.7 x 7.9 mm (6.24 x 2.9 x 0.31 in) |
| Weight | 155 g (5.47 oz) | 163 g (5.75 oz) | 172 g (6.07 oz) |
| SIM Type | Dual-SIM | Single SIM (Nano-SIM), 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 - 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 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G Network | LTE | LTE | LTE (unspecified) |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | |
| Build Features | - | - Fingerprint Sensor - Samsung Pay (Visa, MasterCard certified) - IP68 certified - dust/water proof over 1.5 meter and 30 minutes |
- Fingerprint Sensor(In-display) |
| Notification LED | Yes | Yes | - |
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| OS | Android OS, v7.0 (Nougat) | Android 8.0 (Oreo) | Android 9.0 (Pie) |
| User Interface | - | Samsung Experience | One UI |
| Processor | Octa-core (4x2.35 GHz Kryo & 4x1.9 GHz Kryo) Octa-core (4x2.3 GHz & 4x1.7 GHz), Qualcomm MSM8998 Snapdragon 835 Exynos 8895 Octa |
Octa-core (4x2.8 GHz Mongoose M3 & 4x1.7 GHz Cortex-A55) - EMEA Octa-core (4x2.7 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver) - USA & China, Exynos 9810 Octa - EMEA Qualcomm Snapdragon 845 |
Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm) |
| GPU | Adreno 540 | Mali-G72 MP18 - EMEA Adreno 630 - USA & China |
Mali-G72 MP3 |
| RAM | 4 GB | 4 GB | 8 GB |
| Internal Memory | 64 GB | 64 GB | 128 GB |
| External Memory | microSD, up to 256 GB (dedicated slot) | microSD, up to 256 GB (uses SIM 2 slot) - dual SIM model only | microSD, up to 512 GB (dedicated slot) |
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| Type | Super AMOLED capacitive touchscreen, Gorilla Glass 5 | Super AMOLED Capacitive Touchscreen, Corning Gorilla Glass 5 | Full HD+ Infinity-O Super AMOLED Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.8 inches | 5.8 inches | 6.5 inches |
| Resolution | 1440 x 2960 pixels (568 ppi) | 1440 x 2960 pixels (568 ppi) | 1080 x 2340 pixels (396 ppi) |
| Screen-to-Body Ratio | 84.06% | 84.00% | 89.06% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | No | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 12 MP | 12 MP | 48 MP + 12 MP + 5 MP + 5 MP |
| Flash | Dual-LED (Dual Tone) | LED Flash | LED Flash |
| Features | Phase Detection Autofocus, OIS, f/1.7 aperture, Geo-tagging, Simultaneous 4K Video And 9MP Image Recording, Touch Focus, Face/smile Detection, Auto HDR, Panorama | Phase Detection Autofocus, f/1.5 - f/2.4 variable aperture lens, 26mm, 1/2.5", 1.4 µm, Dual Pixel PDAF, OIS, Geo-tagging, Simultaneous 4K Video And 9MP Image Recording, Touch Focus, Face/smile Detection, Auto HDR, Panorama | 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 |
| Video | 2160p@60fps, 1080p@120fps, HDR, dual-video rec. | 2160p@30fps, 1080p@60fps, HDR, dual-video rec. | 2160p@30fps, 1080p@30fps |
| Front Camera | 8 MP, AF [Similar] | 8 MP, f/1.6, autofocus, 1440p, dual video call, Auto HDR [Similar] |
32 MP, f/2.0, 25mm (wide) HDR 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE, VoLTE | HSPA 42.2/5.76 Mbps, LTE-A (4CA) Cat16 1024/150 Mbps | HSPA, LTE-A |
| Bluetooth | v4.2, A2DP, LE, aptX | 5.0, A2DP, LE, aptX | 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 | v3.1, Type-C 1.0 reversible connector | 3.1, 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, GALILEO | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| Browser | HTML5 | HTML5 | Yes |
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| Internal | 64 GB, 4 GB RAM | 64 GB, 4 GB RAM | 128 GB, 8 GB RAM or 128 GB, 6 GB RAM or 64 GB, 4 GB RAM |
| Expandable Storage | microSD, up to 256 GB (dedicated slot) | microSD, up to 256 GB (uses SIM 2 slot) - dual SIM model only | microSD, up to 512 GB (dedicated slot) |
| USB OTG | Supported | Not 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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| Barometer Sensor | |
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| Heart-rate Sensor | |
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| NFC | |
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| Type | Non-removable Li-Ion battery | Non-removable Li-Ion battery | Non-removable Li-Po Battery Fast battery charging 15W |
| Capacity | 3000 mAh | 3000 mAh | 4000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
Rs. 57,900 
Rs. 25,250 
