Phone Comparison - Xiaomi Redmi Note 4 vs Xiaomi Mi A1 vs Samsung Galaxy J7 Duo (2018)
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| Price Comparison (India) | - | ||
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| Manufacturer | Xiaomi | Xiaomi | Samsung |
| Announced | January 2017 | September 2017 | April 2018 |
| Status | Available - January 2017 | Coming Soon - September 2017 | Available - April 2018 |
| Price | Rs. 10,999 ($145.00) [Similarly Priced] | Rs. 14,999 ($245.00) [Similarly Priced] | Rs. 16,990 ($260.00) [Similarly Priced] |
| Colors | Gold, Silver, Gray | Gold, Pink, Black | Black, Gold |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
151 x 76 x 8.45 mm (5.94 x 2.99 x 0.33 in) |
155.4 x 75.8 x 7.3 mm (6.12 x 2.98 x 0.29 in) |
153.5 x 77.2 x 8.1 mm (6.04 x 3.04 x 0.32 in) |
| Weight | 165 g (5.82 oz) | 165 g (5.82 oz) | - |
| SIM Type | Dual SIM Hybrid (Nano SIM + Micro SIM, or Micro SIM + microSD Card) | Dual SIM Hybrid (Nano SIM + Micro SIM, or Micro SIM + microSD Card) | Dual-SIM |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (optional) |
| 3G Network | HSDPA 2100 | HSDPA 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE | LTE | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800) |
| Messaging | SMS, MMS, Push Mail, EMail | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM |
| Build Features | - Fingerprint Sensor - Infrared Sensor |
- Fingerprint Sensor | - 2.5D Curved Glass - Fingerprint Sensor |
| Notification LED | Yes | Yes | Yes |
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| OS | Android OS, v6.0.1 (Marshmallow) | Android OS, v7.1.1 Nougat | Android OS, v8.0 (Oreo) |
| User Interface | MIUI 8 | Android One (Stock Android) | - |
| Processor | Octa-core 2.0 GHz Cortex-A53, Qualcomm MSM8953 Snapdragon 625 | Octa-core 2.0 GHz Cortex-A53, Qualcomm MSM8953 Snapdragon 625 | 2.39 GHz Octa-core, Exynos 7870 |
| GPU | Adreno 506 | Adreno 506 | Mali-T830 MP2 |
| RAM | 2/3/4 GB | 4 GB | 4 GB |
| Internal Memory | 32/64 GB | 64 GB | 32 GB |
| External Memory | microSD, up to 128 GB | microSD, up to 128 GB | microSD, up to 256 GB |
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| Type | IPS LCD Capacitive Touchscreen | IPS LCD Capacitive Touchscreen | Super AMOLED capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.5 inches | 5.5 inches | 5.5 inches |
| Resolution | 1080 x 1920 pixels (401 ppi) | 1080 x 1920 pixels (401 ppi) | 720 x 1280 pixels (267 ppi) |
| Screen-to-Body Ratio | 72.50% | 70.63% | 70.38% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM Radio | N/A | FM radio, recording |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP | Dual 12 MP | Dual 13 MP + 5 MP |
| Flash | Dual-LED (Dual Tone) | Dual-LED (Dual Tone) | LED flash |
| Features | Phase Detection Autofocus, f/2.0 aperture, Sony IMX258/Samsung S5K3L8 sensor, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | 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 | Auto focus, Live Focus, f/1.9 aperture main, f/1.9 aperture secondary, Geo-tagging, Touch Focus, Face Detection, Panorama |
| Video | 2160p@30fps, 1080p@30fps, 720p@120fps | 2160p@30fps, 1080p@30fps, 720p@120fps | 1080p@30fps |
| Front Camera | 5 MP, 1080p, f/2.0 [Similar] | 16 MP [Similar] | 8 MP, f/1.9 [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps, VoLTE | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps, VoLTE | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps, VoLTE |
| Bluetooth | v4.2, A2DP, LE | v4.2, A2DP, LE | v4.2, A2DP, EDR, LE, ANT+ |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, hotspot |
| USB | microUSB v2.0, USB On-The-Go | Type-C 1.0 reversible connector, USB On-The-Go | microUSB 2.0 |
| GPS | Yes, with A-GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 32/64 GB, 2/3/4 GB RAM | 64 GB, 4 GB RAM | 32 GB, 4 GB RAM |
| Expandable Storage | microSD, up to 128 GB | microSD, up to 128 GB | microSD, up to 256 GB |
| USB OTG | Yes | 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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| NFC | |
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| Type | Non-removable Li-Ion Battery | Non-removable Li-Ion Battery | Non-removable Li-Ion Battery |
| Capacity | 4100 mAh | 3080 mAh | 3000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
Rs. 10,999 
