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Brief information about compared phones: Celkon A64 , Yezz Billy 4.7Celkon A64 2014 year of release. cpu Dual-core 1.2 GHz. screen 4". with resolution 320x480. Smartphone has 0 megapixel front camera and 2 megapixel main camera . Yezz Billy 4.7 2014 year of release. cpu Quad-core 1.2 GHz Cortex-A7. screen 4.7". with resolution 720x1280. Smartphone has 2 megapixel front camera and 8 megapixel main camera . |
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| Display | Technology | TFT | IPS LCD | |
| Touchscreen | capacitive touchscreen | capacitive touchscreen | ||
| Display colors | 16M | |||
| Screen size | 4" inch | 4.7" inch | ||
| Screen area | 47.6 cm2 | 60.9 cm2 | ||
| Screen format | 3:2 (height:width) | 16:9 (height:width) | ||
| Screen to body ratio | 59.1% | 66.7% | ||
| Screen resolution | 320 x 480 px | 720 x 1280 px | ||
| PPI /points per inch/ | 144 PPI | 312 PPI | ||
| Screen protection | Asahi Dragontrail Glass | |||
| Camera and Video | Rear camera, main | 2 MP, Single | 8 MP, Single | |
| Camera specs | 2 MP | 8 MP, AF | ||
| Functions | LED flash | LED flash, panorama, HDR | ||
| Video | Yes | 720p@30fps | ||
| Front camera, selfie | 0.3 MP, Single | 2 MP, Single | ||
| Specifications | VGA | 2 MP | ||
| Performance | Operating system OS | Android 4.2.2 (Jelly Bean) | Microsoft Windows Phone 8.1 | |
| Chipset | Qualcomm MSM8212 Snapdragon 200 (28 nm) | |||
| Processor CPU | Dual-core 1.2 GHz | Quad-core 1.2 GHz Cortex-A7 | ||
| Graphics processor GPU | Adreno 302 | |||
| External memory | microSD, up to 32 GB | microSD, up to 256 GB | ||
| Internal memory | 512 MB, 256 MB RAM | 8 GB, 1 GB RAM | ||
| General specs | Release date | 2014 | 2014, May | |
| Dimensions (HxWxD) | 124 Х 65 Х 10.5 mm | 135.8 Х 67.2 Х 7.2 mm | ||
| Weight | 125.6 g | 120 g | ||
| Colors | White, Black | White, Red, Blue | ||
| Battery | 1400 mAh, Li-Ion | 1780 mAh, Removable Li-Ion | ||
| Battery life | Stand by time- Up to 150 h Talking time- Up to 8 h 20 min | Stand by time- Up to 480 h (2G) / Up to 350 h (3G) Talking time- Up to 16 h (2G) / Up to 7 h 30 min (3G) | ||
| Communication and Connectivity | SIM card | Dual SIM | Dual SIM (Micro-SIM) | |
| Network | Show all network frequencies: | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | ||
| Speed | HSPA 42.2/5.76 Mbps | |||
| GPRS | Yes | Class 12 | ||
| Edge | Yes | Class 12 | ||
| Wi-Fi | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot | ||
| GPS | Yes | Yes, with A-GPS, GLONASS | ||
| NFC | ||||
| USB | microUSB | microUSB 2.0 | ||
| Bluetooth | 2.0 | 4.0, A2DP | ||
| Harmful irradiation | SAR EU - 0.42 W/kg (head) 0.55 W/kg (body) | |||
| Music and Audio | Radio | FM radio | Stereo FM radio | |
| Headphone jack | Yes | Yes | ||
| Other features | Dop | Sensors Accelerometer | Sensors Accelerometer, proximity, compass - Single SIM: CWP 47 Dual SIM: WP 47 | |
