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Brief information about compared phones: Allview Viper E , Coolpad RoarAllview Viper E 2014 year of release. cpu Quad-core 1.3 GHz Cortex-A7. screen 4.5". with resolution 480x854. Smartphone has 2 megapixel front camera and 8 megapixel main camera . Coolpad Roar 2015 year of release. cpu Quad-core 1.3 GHz Cortex-A7. screen 4.5". with resolution 480x854. Smartphone has 2 megapixel front camera and 5 megapixel main camera . |
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| Display | Technology | IPS LCD | IPS LCD | |
| Touchscreen | capacitive touchscreen | capacitive touchscreen | ||
| Display colors | Super AMOLED | |||
| Screen size | 4.5" inch | 4.5" inch | ||
| Screen area | 55.8 cm2 | 55.8 cm2 | ||
| Screen format | 16:9 (height:width) | 16:9 (height:width) | ||
| Screen to body ratio | 127.3 Х 65.5 Х 10 mm | 64.2% | ||
| Screen resolution | 480 x 854 px | 480 x 854 px | ||
| PPI /points per inch/ | 218 PPI | 218 PPI | ||
| Screen protection | Asahi Dragontrail Glass | |||
| Camera and Video | Rear camera, main | 8 MP, Single | 5 MP, Single | |
| Camera specs | 8 MP, AF | 5 MP, AF | ||
| Functions | Dual-LED flash, HDR | LED flash | ||
| Video | 1080p@30fps | Yes | ||
| Front camera, selfie | 2 MP, Single | 2 MP, Single | ||
| Specifications | 2 MP | 2 MP | ||
| Performance | Operating system OS | Android 5.0 (Lollipop) | Android 5.1 (Lollipop) | |
| Chipset | Mediatek MT6582 (28 nm) | Mediatek MT6580 (28 nm) | ||
| Processor CPU | Quad-core 1.3 GHz Cortex-A7 | Quad-core 1.3 GHz Cortex-A7 | ||
| Graphics processor GPU | Mali-400MP2 Z525 -Mali-T720MP2 Z528 | Mali-400MP2 | ||
| External memory | microSD, up to 32 GB (dedicated slot) | microSD, up to 32 GB (dedicated slot) | ||
| Internal memory | 8 GB, 1 GB RAM | 8 GB, 1 GB RAM | ||
| General specs | Release date | 2014, September | 2015, November | |
| Dimensions (HxWxD) | 131 Х 65 Х 7.8 mm | 133 Х 65.4 Х 9 mm | ||
| Weight | 122.5 g | 0 g | ||
| Colors | Black, White | Black | ||
| Battery | 1800 mAh, Removable Li-Ion | 1800 mAh, Removable Li-Ion | ||
| Battery life | Stand by time- Up to 225 h Talking time- Up to 9 h 15 min | |||
| Communication and Connectivity | SIM card | Single SIM (Micro-SIM)Dual SIM (Micro-SIM, dual stand-by) | Nano-SIM | |
| Network | Show all network frequencies: -2G - GSM 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 2100-4G - LTE band 1(2100) | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 | ||
| Speed | HSPA 21.1/5.76 Mbps | HSPA | ||
| GPRS | Class 12 | Yes | ||
| Edge | Class 10 | Yes | ||
| Wi-Fi | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n, hotspot | ||
| GPS | Yes, with A-GPS | Yes, with A-GPS | ||
| NFC | Super AMOLED | |||
| USB | microUSB 2.0 | microUSB 2.0 | ||
| Bluetooth | 4.0, A2DP, EDR | 4.0, A2DP | ||
| Harmful irradiation | SAR EU - 0.84 W/kg (head) 1.24 W/kg (body) | |||
| Music and Audio | Radio | FM radio | FM radio | |
| Headphone jack | Yes | Yes | ||
| Others | DTS sound -Yamaha amplifier | |||
| Other features | Dop | Sensors Accelerometer, proximity, compass | Sensors Yes | |
