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Brief information about compared phones: Oppo R1 R829T , T-Mobile Sidekick 4GOppo R1 R829T 2013 year of release, cpu Quad-core 1.3 GHz Cortex-A7, screen 5", with resolution 720x1280. Smartphone has 5 megapixel front camera and 8 megapixel main camera. T-Mobile Sidekick 4G 2011 year of release, cpu 1.0 GHz Cortex-A8, screen 3.5", with resolution 480x800. Smartphone has 0 megapixel front camera and 3 megapixel main camera. |
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| Display | Technology | IPS LCD | TFT | |
| Touchscreen | capacitive touchscreen | capacitive touchscreen | ||
| Display colors | 16M | 16M | ||
| Screen size | 5" inch | 3.5" inch | ||
| Screen area | 68.9 cm2 | 34.9 cm2 | ||
| Screen format | 16:9 (height:width) | 5:3 (height:width) | ||
| Screen to body ratio | 68.6% | 45.0% | ||
| Screen resolution | 720 x 1280 px | 480 x 800 px | ||
| PPI /points per inch/ | 294 PPI | 267 PPI | ||
| Screen protection | Corning Gorilla Glass 3 | |||
| Camera and Video | Rear camera, main | 8 MP, Single | 3.15 MP, Single | |
| Camera specs | 8 MP, AF | 3.15 MP, AF | ||
| Functions | LED flash, panorama, HDR | |||
| Video | 1080p@30fps | 480p@30fps | ||
| Front camera, selfie | 5 MP, Single | 0.3 MP, Single | ||
| Specifications | 5 MP | VGA | ||
| Performance | Operating system OS | Android 4.2.1 (Jelly Bean) | Android 2.2 (Froyo) | |
| Chipset | Mediatek MT6582 (28 nm) | Hummingbird | ||
| Processor CPU | Quad-core 1.3 GHz Cortex-A7 | 1.0 GHz Cortex-A8 | ||
| Graphics processor GPU | Mali-400MP2 | PowerVR SGX540 | ||
| External memory | No | microSD, up to 32 GB (dedicated slot), 2 GB included | ||
| Internal memory | 16 GB, 1 GB RAM | 1 GB, 512 MB RAM | ||
| General specs | Release date | 2013, December | 2011, March | |
| Dimensions (HxWxD) | 142.7 Х 70.4 Х 7.1 mm | 127 Х 61 Х 15 mm | ||
| Weight | 140 g | 162 g | ||
| Colors | White, Black | Matte Black, Pearl magenta | ||
| Battery | 2410 mAh, Non-removable Li-Ion | 1500 mAh, Removable Li-Ion | ||
| Approximate price | 300 EUR | 310 EUR | ||
| Battery life | Stand by time- Up to 456 h Talking time- Up to 6 h 30 min | |||
| Communication and Connectivity | SIM card | Dual SIM (Micro-SIM, dual stand-by) | Mini-SIM | |
| Network | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 | ||
| Speed | HSPA | HSPA 7.2/5.76 Mbps | ||
| GPRS | Yes | Yes | ||
| Edge | Yes | Yes | ||
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, DLNA, hotspot | Wi-Fi 802.11 b/g/n, DLNA, hotspot | ||
| GPS | Yes, with A-GPS | Yes, with A-GPS | ||
| NFC | ||||
| USB | microUSB 2.0 | microUSB 2.0 | ||
| Bluetooth | 4.0, A2DP | 3.0, A2DP | ||
| Harmful irradiation | SAR - 0.34 W/kg (head) 0.96 W/kg (body) | |||
| Music and Audio | Radio | Stereo FM radio, RDS | Nо | |
| Headphone jack | Yes | Yes | ||
| Others | Active noise cancellation with dedicated mic | |||
| Other features | Dop | Sensors Accelerometer, gyro, proximity | Sensors Accelerometer, proximity - T-Mobile TV -MP4/H.264 player -MP3/WAV/eAAC+ player -Organizer -ThinkFree Office document editor , PDF viewer -Voice memo -Predictive text input - Optical trackpad - Also known as T-Mobile T839 Sidekick 4G | |
