Phone Comparison - Samsung Galaxy S8 vs Xiaomi Mi A1 vs Xiaomi Redmi 5a
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| Price Comparison (India) | - | ||
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| Manufacturer | Samsung | Xiaomi | Xiaomi |
| Announced | March 2017 | September 2017 | October 2017 |
| Status | Available - April 2017 | Coming Soon - September 2017 | Available - October 2017 |
| Price | Rs. 57,900 ($720.00) [Similarly Priced] | Rs. 14,999 ($245.00) [Similarly Priced] | Rs. 4,999 ($90.00) [Similarly Priced] |
| Colors | Black, White, Gold, Silver, Pink Gold | Gold, Pink, Black | Gold, Rose Gold, Gray |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
148.9 x 68.1 x 8 mm (5.86 x 2.68 x 0.31 in) |
155.4 x 75.8 x 7.3 mm (6.12 x 2.98 x 0.29 in) |
140.4 x 70.1 x 8.4 mm (5.53 x 2.76 x 0.33 in) |
| Weight | 155 g (5.47 oz) | 165 g (5.82 oz) | 137 g (4.83 oz) |
| SIM Type | Dual-SIM | Dual SIM Hybrid (Nano SIM + Micro SIM, or Micro SIM + microSD Card) | Hybrid 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 CDMA 800 & TD-SCDMA |
| 3G Network | HSDPA | HSDPA 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE | LTE | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM |
| Build Features | - | - Fingerprint Sensor | - |
| Notification LED | Yes | Yes | Yes |
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| OS | Android OS, v7.0 (Nougat) | Android OS, v7.1.1 Nougat | Android 7.1 (Nougat) |
| User Interface | - | Android One (Stock Android) | MIUI 9 |
| 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 2.0 GHz Cortex-A53, Qualcomm MSM8953 Snapdragon 625 | Quad-core 1.4 GHz Cortex-A53, Qualcomm MSM8917 Snapdragon 425 |
| GPU | Adreno 540 | Adreno 506 | Adreno 308 |
| RAM | 4 GB | 4 GB | 2 GB |
| Internal Memory | 64 GB | 64 GB | 16 GB |
| External Memory | microSD, up to 256 GB (dedicated slot) | microSD, up to 128 GB | microSD, up to 256 GB (uses SIM 2 slot) |
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| Type | Super AMOLED capacitive touchscreen, Gorilla Glass 5 | IPS LCD Capacitive Touchscreen | IPS LCD Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.8 inches | 5.5 inches | 5.0 inches |
| Resolution | 1440 x 2960 pixels (568 ppi) | 1080 x 1920 pixels (401 ppi) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | 84.06% | 70.63% | 69.89% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | N/A | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 12 MP | Dual 12 MP | 13 MP |
| Flash | Dual-LED (Dual Tone) | Dual-LED (Dual Tone) | 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, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR, Wide-angle lens - 12MP, 1.25μm, f/2.2 aperture; Telephoto lens - 12MP, 1.0μm, f/2.6 aperture | Autofocus, f/2.2, Geo-tagging, Touch Focus, Face/smile Detection, HDR, Panorama |
| Video | 2160p@60fps, 1080p@120fps, HDR, dual-video rec. | 2160p@30fps, 1080p@30fps, 720p@120fps | 1080p@30fps |
| Front Camera | 8 MP, AF [Similar] | 16 MP [Similar] | 5 MP, f/2.0 [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE, VoLTE | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps, VoLTE | HSPA, LTE, VoLTE |
| Bluetooth | v4.2, A2DP, LE, aptX | v4.2, A2DP, LE | 4.1, 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, WiFi Direct, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | v3.1, Type-C 1.0 reversible connector | Type-C 1.0 reversible connector, USB On-The-Go | microUSB 2.0 |
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, BDS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 64 GB, 4 GB RAM | 64 GB, 4 GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 256 GB (dedicated slot) | microSD, up to 128 GB | microSD, up to 256 GB (uses SIM 2 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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| Light 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-Ion Battery |
| Capacity | 3000 mAh | 3080 mAh | 3000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
Rs. 57,900 
