Phone Comparison - Oppo A37 vs Oppo A57 vs Xiaomi Redmi 4X
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| Price Comparison (India) | - | - | |
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| Manufacturer | Oppo | Oppo | Xiaomi |
| Announced | June 2016 | November 2016 | February 2017 |
| Status | Available - June 2016 | Available - January 2017 | Available - March 2017 |
| Price | Rs. 10,590 ($155.74) [Similarly Priced] | Rs. 14,990 ($240.00) [Similarly Priced] | Rs. 6,790 ($100.00) [Similarly Priced] |
| Colors | Gold, Rose Gold | Gold, Rose Gold | Cherry Pink, Champagne Gold, Matte Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
143.1 x 71 x 7.7 mm (5.63 x 2.8 x 0.3 in) |
149.1 x 72.9 x 7.65 mm (5.87 x 2.87 x 0.3 in) |
139.24 x 69.96 x 8.65 mm (5.48 x 2.75 x 0.34 in) |
| Weight | 136 g (4.8 oz) | 147 g (5.19 oz) | 150 g (5.29 oz) |
| SIM Type | Dual-SIM | Dual-SIM | Dual SIM Hybrid (Nano SIM + Micro SIM, or Micro SIM + microSD Card) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO - A59m |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 / 800 - Taiwan |
| 4G Network | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 41(2500) | LTE band 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) | LTE band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 18(800), 19(800), 26(850), 28(700), 38(2600), 39(1900), 40(2300), 41(2500) - Taiwan |
| Messaging | SMS, MMS, Push Mail, EMail | SMS, MMS, Push Mail, EMail | SMS, MMS, Push Mail, EMail, IM |
| Build Features | - | - Fingerprint Sensor - Metal Build - 2.5D Curved Glass | - Fingerprint Sensor - Infrared Sensor - Metal Build - 2.5D Curved Glass |
| Notification LED | - | Yes | Yes |
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| OS | Android OS, v5.1 (Lollipop) | Android OS, v6.0 (Marshmallow) | Android OS, v6.0.1 (Marshmallow) |
| User Interface | - | ColorOS 3.0 | MIUI 8 |
| Processor | Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 | Octa-core 1.4 GHz Cortex-A53, Qualcomm MSM8940 Snapdragon 435 | Octa-core 1.4 GHz Cortex-A53, Qualcomm MSM8940 Snapdragon 435 |
| GPU | Adreno 306 | Adreno 505 | Adreno 505 |
| RAM | 2 GB | 3 GB | 2/3 GB |
| Internal Memory | 16 GB | 32 GB | 16/32 GB |
| External Memory | microSD, up to 256 GB (dedicated slot) | microSD, up to 128 GB (uses SIM 2 slot) | microSD, up to 128 GB (uses SIM 2 slot) |
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| Type | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen | IPS LCD Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.0 inches | 5.2 inches | 5.0 inches |
| Resolution | 720 x 1280 pixels (294 ppi) | 720 x 1280 pixels (282 ppi) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | 67.70% | 68.79% | 70.62% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio | FM Radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, f/2.0 | 13 MP | 13 MP, 4160 x 3120 pixels |
| Flash | LED flash | LED Flash | Dual-LED (dual Tone) |
| Features | Geo-tagging, Touch Focus, Face Detection, HDR, Panorama | Phase Detection Autofocus, f/2.2, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama | Phase Detection Autofocus, f/2.2 aperture, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR |
| Video | 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | 5 MP, f/2.4, 1/4" sensor size [Similar] | 16 MP [Similar] | 5 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE | HSPA, LTE, VoLTE | HSPA 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps, VoLTE |
| Bluetooth | v4.0, A2DP | v4.1, A2DP | v4.2, A2DP, EDR, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, hotspot | Wi-Fi 802.11 a/b/g/n, hotspot | Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, hotspot |
| USB | microUSB v2.0 | microUSB v2.0, USB Host | microUSB v2.0, USB OTG |
| GPS | Yes, with A-GPS | Yes, with A-GPS | Yes, with A-GPS, GLONASS, BDS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 16 GB, 2 GB RAM | 32 GB, 3 GB RAM | 16/32 GB, 2/3 GB RAM |
| Expandable Storage | microSD, up to 256 GB (dedicated slot) | microSD, up to 128 GB (uses SIM 2 slot) | microSD, up to 128 GB (uses SIM 2 slot) |
| USB OTG | - | Supported | Supported |
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| Fingerprint | |
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| Proximity Sensor | |
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| Accelerometer 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 | 2630 mAh | 2900 mAh | 4100 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
Rs. 11,535 
Rs. 11,399 
Rs. 11,589 
