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Brief information about compared phones: Allview V2 Viper , Celkon A66Allview V2 Viper 2015 year of release. cpu Quad-core 1.3 GHz Cortex-A53. screen 4.7". with resolution 720x1280. Smartphone has 5 megapixel front camera and 8 megapixel main camera . Celkon A66 2014 year of release. cpu Dual-core 1.2 GHz. screen 4.5". with resolution 480x854. Smartphone has 0 megapixel front camera and 3 megapixel main camera . |
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| Display | Technology | Super AMOLED | TFT | |
| Touchscreen | capacitive touchscreen | capacitive touchscreen | ||
| Display colors | 16M | |||
| Screen size | 4.7" inch | 4.5" inch | ||
| Screen area | 60.9 cm2 | 55.8 cm2 | ||
| Screen format | 16:9 (height:width) | 16:9 (height:width) | ||
| Screen to body ratio | 66.2% | 61.1% | ||
| Screen resolution | 720 x 1280 px | 480 x 854 px | ||
| PPI /points per inch/ | 312 PPI | 218 PPI | ||
| Screen protection | Scratch-resistant glass | |||
| Camera and Video | Rear camera, main | 8 MP, Single | 3.15 MP, Single | |
| Camera specs | 8 MP, AF | 3.15 MP | ||
| Functions | Dual-LED flash, HDR | LED flash | ||
| Video | 1080p@30fps | Yes | ||
| Front camera, selfie | 5 MP, Single | 0.3 MP, Single | ||
| Specifications | 5 MP | VGA | ||
| Performance | Operating system OS | Android 5.0 (Lollipop) | Android 4.1.2 (Jelly Bean) | |
| Chipset | Mediatek MT6735 (28 nm) | |||
| Processor CPU | Quad-core 1.3 GHz Cortex-A53 | Dual-core 1.2 GHz | ||
| Graphics processor GPU | Mali-T720MP2 | |||
| External memory | microSD, up to 256 GB | microSD, up to 32 GB | ||
| Internal memory | 16 GB, 1 GB RAM | 4 GB, 512 MB RAM | ||
| Antutu 7 score | 23685 | |||
| General specs | Release date | 2015, October | 2014 | |
| Dimensions (HxWxD) | 137.2 Х 67 Х 7.9 mm | 136 Х 67.2 Х 11 mm | ||
| Weight | 143 g | 98 g | ||
| Colors | Blue, White | White, Black | ||
| Battery | 2000 mAh, Removable Li-Ion | 2000 mAh, Li-Ion | ||
| Approximate price | 200 EUR | |||
| Battery life | Stand by time- Up to 200 h (3G) Talking time- Up to 9 h (3G) | Stand by time- Up to 160 h Talking time- Up to 5 h | ||
| Communication and Connectivity | SIM card | Single SIM (Micro-SIM)Dual SIM (Micro-SIM, dual stand-by) | Dual SIM | |
| Network | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 1900 / 2100-4G - LTE band 1(2100), 3(1800), 7(2600), 20(800) | Show all network frequencies: | ||
| Speed | HSPA 21.1/5.76 Mbps, LTE Cat4 150/50 Mbps | |||
| GPRS | Yes | Yes | ||
| Edge | Yes | Yes | ||
| Wi-Fi | Wi-Fi 802.11 b/g/n, hotspot, Wi-Fi Direct | Wi-Fi 802.11 b/g/n, hotspot | ||
| GPS | Yes, with A-GPS | Yes | ||
| NFC | Super AMOLED | |||
| USB | microUSB 2.0 | microUSB | ||
| Bluetooth | 4.0, A2DP, EDR | 2.0 | ||
| Harmful irradiation | SAR EU - 0.83 W/kg (head) | SAR EU - 0.38 W/kg (head) 0.47 W/kg (body) | ||
| Music and Audio | Radio | FM radio | FM radio | |
| Headphone jack | Yes | Yes | ||
| Other features | Dop | Sensors Accelerometer, proximity, compass - Acer Liquid Zest Z525 with 3G Acer Liquid Zest 4G Z528 with 3G/LTE, Infrared port - Fast battery charging (Pump Express 2.0+) - For metroPCS | Sensors Accelerometer, proximity | |
