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Brief information about compared phones: Nokia E55 , Yezz Billy 4Nokia E55 2009 year of release. cpu 600 MHz ARM 11. screen 2.4". with resolution 240x320. Smartphone has 0 megapixel front camera and 3 megapixel main camera . Yezz Billy 4 2014 year of release. cpu Quad-core 1.2 GHz Cortex-A7. screen 4". with resolution 480x800. Smartphone has 1 megapixel front camera and 8 megapixel main camera . |
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| Display | Technology | TFT | TFT | |
| Touchscreen | capacitive touchscreen | |||
| Display colors | 16M | 16M | ||
| Screen size | 2.4" inch | 4" inch | ||
| Screen area | 17.8 cm2 | 45.5 cm2 | ||
| Screen format | 4:3 (height:width) | 5:3 (height:width) | ||
| Screen to body ratio | 31.4% | 57.7% | ||
| Screen resolution | 240 x 320 px | 480 x 800 px | ||
| PPI /points per inch/ | 167 PPI | 233 PPI | ||
| Camera and Video | Rear camera, main | 3.2 MP, Single | 8 MP, Single | |
| Camera specs | 3.2 MP | 8 MP, AF | ||
| Functions | LED flash | LED flash | ||
| Video | 480p@15fps | 720p@30fps | ||
| Front camera, selfie | 0.3 MP, Single | 1.3 MP, Single | ||
| Specifications | QVGA videocall camera | 1.3 MP | ||
| Performance | Operating system OS | Symbian, S60 rel. 3.2 | Microsoft Windows Phone 8.1 | |
| Chipset | Qualcomm MSM8212 Snapdragon 200 (28 nm) | |||
| Processor CPU | 600 MHz ARM 11 | Quad-core 1.2 GHz Cortex-A7 | ||
| Graphics processor GPU | Adreno 302 | |||
| External memory | microSD, up to 16 GB (dedicated slot), 2 GB included | microSD, up to 256 GB | ||
| Internal memory | 60 MB | 4 GB, 512 MB RAM | ||
| General specs | Release date | 2009, February | 2014, June | |
| Dimensions (HxWxD) | 116 Х 49 Х 9.9 mm | 122.5 Х 64.4 Х 9.9 mm | ||
| Weight | 98 g | 109 g | ||
| Colors | Black Aluminium, White Aluminium, Red | White, Black, Red, Gun Metal, Blue, Yellow, Champing Gold | ||
| Battery | 1500 mAh, Removable Li-Po | 1300 mAh, Removable Li-Ion | ||
| Approximate price | 150 EUR | |||
| Battery life | Stand by time- Up to 672 h (2G) / 432 h (3G) Talking time- Up to 8 h (2G) / 6 h (3G) Music play - Up to 18 h | Stand by time- Up to 350 h (2G) / Up to 300 h (3G) Talking time- Up to 7 h (2G) / Up to 4 h 30 min (3G) | ||
| Communication and Connectivity | SIM card | Mini-SIM | Dual SIM (Micro-SIM) | |
| Network | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | ||
| Speed | HSPA 10.2/2 Mbps | HSPA 42.2/5.76 Mbps | ||
| GPRS | Class 32 | Class 12 | ||
| Edge | Class 32, 296 / 178.8 kbits | Class 12 | ||
| Wi-Fi | Wi-Fi 802.11 b/g, UPnP technology | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot | ||
| GPS | Yes, with A-GPS; Nokia Maps 3.0 | Yes, with A-GPS, GLONASS | ||
| NFC | ||||
| USB | microUSB 2.0 | microUSB 2.0 | ||
| Bluetooth | 2.0, A2DP | 4.0, A2DP | ||
| Harmful irradiation | SAR - 0.98 W/kg (head) 0.70 W/kg (body) SAR EU - 1.19 W/kg (head) | |||
| Music and Audio | Radio | Stereo FM radio, RDS | Stereo FM radio | |
| Headphone jack | Yes | Yes | ||
| Other features | Dop | Sensors Accelerometer, compass - WMV/RV/MP4/3GP player -MP3/WMA/WAV/RA/AAC/M4A player -Document editor (Word, Excel, PowerPoint, PDF) incl. MS Office 2007 support via free update -Voice memo | Sensors Accelerometer, proximity | |
