Phone Comparison - Oppo R1 R829T vs Samsung Galaxy Note 4 Duos vs Samsung Galaxy A8
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| Manufacturer | Oppo | Samsung | Samsung |
| Announced | December 2013 | October 2014 | July 2015 |
| Status | Available - December 2013 | Available - October 2014 | Available - August 2015 |
| Price | - | - | Rs. 26,990 ($396.91) [Similarly Priced] |
| Colors | White, Black | Frosted white, Charcoal black, Bronze Gold, Blossom Pink | Pearl White, Midnight Black, Champagne Gold |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
142.7 x 70.4 x 7.1 mm (5.62 x 2.77 x 0.28 in) |
153.5 x 78.6 x 8.5 mm (6.04 x 3.09 x 0.33 in) |
158 x 76.8 x 5.9 mm (6.22 x 3.02 x 0.23 in) |
| Weight | 140 g (4.94 oz) | 175 g (6.17 oz) | 151 g (5.33 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 TD-SCDMA 1880 / 2010 - SIM 1 |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (optional) |
| 3G Network | TD-SCDMA 1880-1920/ 2010-2025 | HSDPA 850 / 900 / 1900 / 2100 - SIM 1 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | - | LTE 1800 / 2100 / 2600 (Bands 1, 3, 7) - SIM 1 | LTE |
| Messaging | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | - | - Fingerprint sensor (PayPal certified) - S Pen stylus |
- Fingerprint sensor |
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| OS | Android OS, v4.2.1 (Jelly Bean) | Android OS, v4.4.4 (KitKat) | Android OS, v5.1 (Lollipop) |
| Processor | Quad-core 1.3 GHz, MediaTek MT6582 | Quad-core 2.7 GHz Krait 450, Qualcomm Snapdragon 805 | Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 |
| GPU | Mali-400MP2 | Adreno 420 | Adreno 405 |
| RAM | 1 GB | 3 GB | 2 GB |
| Internal Memory | 16 GB | 16 GB | 16/32 GB |
| External Memory | No | microSD, up to 128 GB | microSD, up to 128 GB (uses SIM 2 slot) |
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| Type | IPS LCD capacitive touchscreen | Super AMOLED capacitive touchscreen | Super AMOLED capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.0 inches | 5.7 inches | 5.7 inches |
| Resolution | 720 x 1280 pixels (294 ppi) | 1440 x 2560 pixels (515 ppi) | 1080 x 1920 pixels (386 ppi) |
| Screen-to-Body Ratio | 68.47% | 74.32% | 73.99% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio with RDS | No | FM radio with RDS; recording |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264x2448 pixels | 16 MP, 5312 x 2988 pixels | 16 MP, 5312 x 2988 pixels |
| Flash | LED flash | optical image stabil | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | Dual Shot, Simultaneous HD Video And Image Recording, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR |
| Video | Yes, 1080p | 2160p@30fps, 1080p@60fps, optical stabilization, dual-video rec. | 1080p@30fps |
| Front Camera | Yes, 5 MP [Similar] | 3.7 MP, 1440p [Similar] | 5 MP, 1080p [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA+ | HSDPA, HSUPA, LTE | HSPA 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps |
| Bluetooth | Yes, v4.0 with A2DP | v4.1, A2DP, EDR, LE | v4.1, A2DP, EDR, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, WiFi Direct, hotspot |
| USB | Yes, microUSB v2.0 | microUSB v2.0 (MHL 3), USB Host, USB On-the-go | microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS, GLONASS/ Beidou (market dependant) |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 16 GB, 1 GB RAM | 16 GB, 3 GB RAM | 16/32 GB, 2 GB RAM |
| Expandable Storage | No | microSD, up to 128 GB | microSD, up to 128 GB (uses SIM 2 slot) |
| USB OTG | - | 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 | Li-Ion Battery | Li-Ion Battery | Non-removable Li-Ion Battery |
| Capacity | 2410 mAh | 3000 mAh | 3050 mAh |
| Stand by | - | Up to 381 h (3G) | - |
| Talk Time | - | - | - |
