Phone Comparison - Oppo R1 R829T vs Xiaomi Mi 4i vs Lenovo K80
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| Manufacturer | Oppo | Xiaomi | Lenovo |
| Announced | December 2013 | April 2015 | April 2015 |
| Status | Available - December 2013 | Available - April 2015 | Available - April 2015 |
| Price | - | Rs. 8,999 ($132.34) [Similarly Priced] | Rs. 18,300 ($269.12) [Similarly Priced] |
| Colors | White, Black | Black, White, Blue, Yellow, Pink | Black, Silver, Red |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
142.7 x 70.4 x 7.1 mm (5.62 x 2.77 x 0.28 in) |
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in) |
8.5 mm thickness (0.33 in thickness) |
| Weight | 140 g (4.94 oz) | 130 g (4.59 oz) | - |
| 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 |
| 3G Network | TD-SCDMA 1880-1920/ 2010-2025 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 2100 |
| 4G Network | - | LTE | LTE |
| Messaging | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.2.1 (Jelly Bean) | Android OS, v5.0 (Lollipop) | Android OS, v5.0 (Lollipop) |
| Processor | Quad-core 1.3 GHz, MediaTek MT6582 | Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 | Quad-core 1.8 GHz |
| GPU | Mali-400MP2 | Adreno 405 | - |
| RAM | 1 GB | 2 GB | 4 GB |
| Internal Memory | 16 GB | 16/32 GB | 64 GB |
| External Memory | No | No | microSD, up to 32 GB |
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| Type | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen | IPS capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.0 inches | 5.0 inches | 5.5 inches |
| Resolution | 720 x 1280 pixels (294 ppi) | 1080 x 1920 pixels (441 ppi) | 1080 x 1920 pixels (401 ppi) |
| Screen-to-Body Ratio | 68.47% | 71.57% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | Stereo FM radio with RDS | FM radio | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264x2448 pixels | 13 MP, 4128 x 3096 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | LED flash | optical image stabil |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR | Geo-tagging, Touch Focus, Face Detection, HDR, Panorama |
| Video | Yes, 1080p | 1080p@30fps | 1080p@30fps |
| Front Camera | Yes, 5 MP [Similar] | 5 MP [Similar] | Yes [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA+ | HSPA, LTE | HSPA, LTE Cat4 150/50 Mbps |
| Bluetooth | Yes, v4.0 with A2DP | v4.0, A2DP | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot |
| USB | Yes, microUSB v2.0 | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS, GLONASS | Yes, with A-GPS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 16 GB, 1 GB RAM | 16/32 GB, 2 GB RAM | 64 GB, 4 GB RAM 32 GB, 2 GB RAM |
| Expandable Storage | No | No | microSD, up to 32 GB |
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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-Po Battery | Li-Ion Battery |
| Capacity | 2410 mAh | 3120 mAh | 4000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
