Here is the comparison of features and specification of the mobile phones Nokia Lumia 638 and Yezz Billy 4.
Nokia Lumia 638 is manufactured by Nokia and this phone was announced in 2014, December. Nokia Lumia 638 comes with with 4.5 inches and the resolution of the screen is 480 x 854 pixels.
This phone supports following network:
2G: GSM 850 / 900 / 1800 / 1900
3G: HSDPA 850 / 900 / 1900 / 2100 - RM-1010
4G: LTE 1800 / 1900 / 2100 / 2300 / 2500 / 2600 (Bands 3, 7, 38, 39, 40, 41)
Dipsplay Type: The dispaly type of the Nokia Lumia 638 is IPS LCD capacitive touchscreen with 16M colors.
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Yezz Billy 4 is manufactured by Yezz and this phone was announced in 2014, June. Yezz Billy 4 comes with with 4.0 inches and the resolution of the screen is 480 x 800 pixels.
This phone supports following network:
2G: GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G: HSDPA 850 / 1900 - SIM 1 & SIM 2 - BM4MI043
Dipsplay Type: The dispaly type of the Yezz Billy 4 is TFT capacitive touchscreen with 16M colors.
| Specification Summary: Nokia Lumia 638 vs Yezz Billy 4 | ||
| Mobile Device | Nokia Lumia 638 | Yezz Billy 4 |
| Display | 4.5 inches | 4.0 inches |
| Resolution | 480 x 854 pixels | 480 x 800 pixels |
| Processor | Quad-core 1.2 GHz Cortex-A7 | Quad-core 1.2 GHz Cortex-A7 |
| Primary Camera | 5 MP | 8 MP |
| Front Camera | No | 1.3 MP |
| Storage | 8 GB | 4 GB |
| Battery | Li-Ion 1830 mAh (BL-5H) | Li-Ion 1300 mAh |
| Full Specification comparison of Nokia Lumia 638 vs Yezz Billy 4 | ||
| Mobile Device | Nokia Lumia 638 | Yezz Billy 4 |
Display |
||
| Screen Size | 4.5 inches (~64.6% screen-to-body ratio) | 4.0 inches (~57.7% screen-to-body ratio) |
| Screen Resolution | 480 x 854 pixels | 480 x 800 pixels |
| Pixel Density | 480 x 854 pixels (~218 ppi pixel density) | 480 x 800 pixels (~233 ppi pixel density) |
| Display Type | IPS LCD capacitive touchscreen with 16M colors | TFT capacitive touchscreen with 16M colors |
| Screen Protection | Corning Gorilla Glass 3 | |
Processor and RAM |
||
| Processor | Quad-core 1.2 GHz Cortex-A7 | Quad-core 1.2 GHz Cortex-A7 |
| Interal Storage | 8 GB, 1 GB RAM | 4 GB, 512 MB RAM |
| External Storage | microSD, up to 128 GB | microSD, up to 128 GB |
OS |
||
| OS Details | Microsoft Windows Phone 8.1 | Microsoft Windows Phone 8.1 |
Display |
||
| Display | 4.5 inches (~64.6% screen-to-body ratio) IPS LCD capacitive touchscreen, 16M colors 480 x 854 pixels (~218 ppi pixel density) |
4.0 inches (~57.7% screen-to-body ratio) TFT capacitive touchscreen, 16M colors 480 x 800 pixels (~233 ppi pixel density) |
| Display Type | IPS LCD capacitive touchscreen, 16M colors | TFT capacitive touchscreen, 16M colors |
Camera |
||
| Main Camera | 5 MP, 2592 ? 1944 pixels, autofocus | 8 MP, 3264 x 2448 pixels, autofocus, LED flash |
| Front Camera | No | 1.3 MP |
| Camera Features | 1/4'' sensor size, geo-tagging, panorama | Geo-tagging, touch focus |
Connectivity |
||
| GPRS | Yes | Class 12 |
| EDGE | Yes | Class 12 |
| 2G | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G | HSDPA 850 / 900 / 1900 / 2100 - RM-1010 | HSDPA 850 / 1900 - SIM 1 & SIM 2 - BM4MI043 |
| 4G | LTE 1800 / 1900 / 2100 / 2300 / 2500 / 2600 (Bands 3, 7, 38, 39, 40, 41) | |
| Wi-Fi/connectivity | Wi-Fi 802.11 b/g/n, DLNA, hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot |
| Bluetooth | v4.0, A2DP, LE/ apt-X after WP8 Denim update | v4.0, A2DP |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS |
| USB | microUSB v2.0 | microUSB v2.0 |
Multimedia |
||
| FM Radio | FM radio | Stereo FM radio |
| Loudspeaker | ||
| Audio Jack | Yes | Yes |
Other Features |
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| Compass | ||
| Proximity Sensors | Yes | |
| Accelerometer | Yes | Yes |
| Ambient Sensor | ||
| Gyroscope Sensor | ||
| Barometer Sensor | ||
| Temperature Sensor | ||
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