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Brief information about compared phones: Nokia E61 , Yezz Billy 4Nokia E61 2005 year of release. cpu 220 MHz Dual ARM 9. screen 2.9". with resolution 320x240. 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 | 2.9" inch | 4" inch | ||
| Screen area | 26.0 cm2 | 45.5 cm2 | ||
| Screen format | 4:3 (height:width) | 5:3 (height:width) | ||
| Screen to body ratio | 31.9% | 57.7% | ||
| Screen resolution | 320 x 240 px | 480 x 800 px | ||
| PPI /points per inch/ | 138 PPI | 233 PPI | ||
| Camera and Video | Rear camera, main | 0 MP, | 8 MP, Single | |
| Camera specs | 8 MP, AF | |||
| Functions | LED flash | |||
| Video | 720p@30fps | |||
| Front camera, selfie | 0 MP, | 1.3 MP, Single | ||
| Specifications | 1.3 MP | |||
| Performance | Operating system OS | Symbian OS 9.1, Series 60 UI | Microsoft Windows Phone 8.1 | |
| Chipset | Qualcomm MSM8212 Snapdragon 200 (28 nm) | |||
| Processor CPU | 220 MHz Dual ARM 9 | Quad-core 1.2 GHz Cortex-A7 | ||
| Graphics processor GPU | Adreno 302 | |||
| External memory | miniSD, 64 MB included | microSD, up to 256 GB | ||
| Internal memory | 64 MB, 64 MB RAM | 4 GB, 512 MB RAM | ||
| General specs | Release date | 2005, October | 2014, June | |
| Dimensions (HxWxD) | 117 Х 69.7 Х 14 mm | 122.5 Х 64.4 Х 9.9 mm | ||
| Weight | 144 g | 109 g | ||
| Colors | Silver | White, Black, Red, Gun Metal, Blue, Yellow, Champing Gold | ||
| Battery | 1500 mAh, Removable Li-Po | 1300 mAh, Removable Li-Ion | ||
| Approximate price | 230 EUR | |||
| Battery life | Stand by time- Up to 260 h Talking time- Up to 7 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 | Yes, 384 kbps | HSPA 42.2/5.76 Mbps | ||
| GPRS | Yes | Class 12 | ||
| Edge | Class 10 | Class 12 | ||
| Wi-Fi | Wi-Fi 802.11i/e/g, VoIP over WLAN | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot | ||
| GPS | No | Yes, with A-GPS, GLONASS | ||
| NFC | ||||
| USB | Pop-Port | microUSB 2.0 | ||
| Bluetooth | 1.2 | 4.0, A2DP | ||
| Harmful irradiation | SAR - 1.14 W/kg (head) 1.13 W/kg (body) SAR EU - 0.79 W/kg (head) | |||
| Music and Audio | Radio | No | Stereo FM radio | |
| Headphone jack | No | Yes | ||
| Others | Five-way scroll key | |||
| Other features | Dop | , Infrared port - WMV/RV/MP4/3GP player -MP3/WMA/WAV/RA/AAC/M4A player -Document viewer (Word, Excel, PowerPoint, PDF) -Blackberry connectivity -Voice command/memo -Organizer -Printing | Sensors Accelerometer, proximity | |
