Phone Comparison - Sony Xperia T2 Ultra vs OPPO Neo R831K vs Xiaomi Mi 4i
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| Manufacturer | Sony | Oppo | Xiaomi |
| Announced | January 2014 | August 2014 | April 2015 |
| Status | Available - January 2014 | Available - August 2014 | Available - April 2015 |
| Price | - | - | Rs. 8,999 ($132.34) [Similarly Priced] |
| Colors | Black, White, Purple | White, Black | Black, White, Blue, Yellow, Pink |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
165.2 x 83.8 x 7.7 mm (6.5 x 3.3 x 0.3 in) |
132 x 65.8 x 9.2 mm (5.2 x 2.59 x 0.36 in) |
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in) |
| Weight | 171.7 g / 172.4 g (6.03.0.25 oz / 6.07.0.14 oz) | 130 g (4.59 oz) | 130 g (4.59 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - all versions | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 2100 - D5303 HSDPA 850 / 900 / 1700 / 1900 / 2100 - D5306 |
HSDPA 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE 800 / 850 / 900 / 1800 / 2100 / 2600 - D5303 | - | LTE |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.3 (Jelly Bean) | Android OS, v4.2.2 (Jelly Bean) based Color OS | Android OS, v5.0 (Lollipop) |
| Processor | Quad-core 1.4 GHz, Qualcomm MSM8928 | Dual-core 1.3 GHz | Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 |
| GPU | - | - | Adreno 405 |
| RAM | 1 GB | 1 GB | 2 GB |
| Internal Memory | 8 GB | 4 GB | 16/32 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB | No |
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| Type | TFT capacitive touchscreen, TRILUMINOS™ Display, Mobile BRAVIA engine 2 | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 6.0 inches | 4.5 inches | 5.0 inches |
| Resolution | 720 x 1280 pixels (245 ppi) | 480 x 854 pixels (218 ppi) | 1080 x 1920 pixels (441 ppi) |
| Screen-to-Body Ratio | 71.55% | 64.07% | 71.57% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio with RDS | FM radio | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4128 x 3096 pixels | 5 MP, 2592 x 1944 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED flash | LED Flash | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection, Image Stabilization, HDR, Sweep Panorama | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR | Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR |
| Video | Yes, 1080p@30fps, video stabilization, HDR | Yes | 1080p@30fps |
| Front Camera | Yes, 1.1 MP, 720p@30fps [Similar] | Yes, 2 MP [Similar] | 5 MP [Similar] |
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| GPRS | Up to 107 kbps | Yes | Yes |
| Edge | Up to 296 kbps | Yes | Yes |
| 3G | HSDPA, 42 Mbps; HSUPA, 5.76 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL | HSPA+ | HSPA, LTE |
| Bluetooth | Yes, v4.0 with A2DP | v2.1, A2DP | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi 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 and GLONASS | Yes, with A-GPS | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML | HTML5 |
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| Internal | 8 GB, 1 GB RAM | 4 GB, 1 GB RAM | 16/32 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 32 GB | No |
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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 | Li-Ion Battery | Li-Po Battery |
| Capacity | 3000 mAh | 1900 mAh | 3120 mAh |
| Stand by | Up to 1071 h (2G) Up to 1046 h (3G) |
- | - |
| Talk Time | Up to 14 h (2G) Up to 24 h (3G) |
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