Lenovo A850 vs Lenovo Vibe X vs Lenovo S820 vs Lenovo K900 comparison
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| key specs |
| Display | 5.50-inch | 5.00-inch | 4.70-inch | 5.50-inch |
| Processor | MediaTek MT6582M | MediaTek MT6589T | MediaTek MT6589 | Intel Atom Z2580 |
| Front Camera | 0.3-megapixel | 5-megapixel | 2-megapixel | 2-megapixel |
| Rear Camera | 5-megapixel | 13-megapixel | 12-megapixel | 13-megapixel |
| RAM | 1GB | 2GB | 1GB | 2GB |
| Storage | 4GB | 16GB | 4GB | 16GB |
| Battery Capacity | 2250mAh | 2000mAh | 2000mAh | 2500mAh |
| OS | Android 4.2 | Android 4.2 | Android 4.2 | Android 4.1.2 |
| Resolution | 540x960 pixels | 1080x1920 pixels | 720x1280 pixels | 1080x1920 pixels |
| general |
| Brand | Lenovo | Lenovo | Lenovo | Lenovo |
| Model | A850 | Vibe X | S820 | K900 |
| Release date | September 1, 2013 | September 1, 2013 | June 1, 2013 | June 1, 2013 |
| Form factor | Touchscreen | Bar | Bar | Bar |
| Dimensions (mm) | 153.50 x 79.30 x 9.45 | - | 139.50 x 69.70 x 8.95 | - |
| Weight (g) | 184.00 | 121.00 | 143.00 | 162.00 |
| Battery capacity (mAh) | 2250 | 2000 | 2000 | 2500 |
| Removable battery | Yes | No | Yes | No |
| Colours | White, Black | - | - | - |
| Thickness | - | 6.9 | - | 6.9 |
| display |
| Screen size (inches) | 5.50 | 5.00 | 4.70 | 5.50 |
| Touchscreen | Yes | Yes | Yes | Yes |
| Resolution | 540x960 pixels | 1080x1920 pixels | 720x1280 pixels | 1080x1920 pixels |
| Pixels per inch (PPI) | - | 440 | - | - |
| hardware |
| Processor | 1.3GHz quad-core | 1.5GHz quad-core | 1.2GHz quad-core | 2GHz dual-core |
| Processor make | MediaTek MT6582M | MediaTek MT6589T | MediaTek MT6589 | Intel Atom Z2580 |
| RAM | 1GB | 2GB | 1GB | 2GB |
| Internal storage | 4GB | 16GB | 4GB | 16GB |
| Expandable storage | Yes | No | Yes | No |
| Expandable storage type | microSD | - | microSD | - |
| Expandable storage up to (GB) | 32 | - | 32 | - |
| camera |
| Rear camera | 5-megapixel | 13-megapixel | 12-megapixel | 13-megapixel |
| Rear flash | Yes | LED | LED | Yes |
| Front camera | 0.3-megapixel | 5-megapixel | 2-megapixel | 2-megapixel |
| software |
| Operating system | Android 4.2 | Android 4.2 | Android 4.2 | Android 4.1.2 |
| connectivity |
| Wi-Fi | Yes | Yes | Yes | Yes |
| Wi-Fi standards supported | 802.11 b/g/n | - | 802.11 a/b/g/n | - |
| GPS | Yes | Yes | Yes | Yes |
| Bluetooth | Yes, v 4.00 | Yes | Yes, v 3.00 | Yes |
| NFC | No | No | No | No |
| Infrared | No | No | No | No |
| USB OTG | No | No | No | No |
| Headphones | 3.5mm | 3.5mm | 3.5mm | - |
| FM | No | Yes | Yes | Yes |
| Number of SIMs | 2 | 1 | 2 | 1 |
| Wi-Fi Direct | No | Yes | No | Yes |
| Mobile High-Definition Link (MHL) | No | No | No | No |
| sim 1 |
| SIM Type | Regular | Micro-SIM | Regular | Regular |
| GSM/CDMA | GSM | GSM | GSM | GSM |
| 3G | Yes | Yes | Yes | Yes |
| 4G/ LTE | No | No | No | No |
| sim 2 |
| SIM Type | Regular | - | Regular | - |
| GSM/CDMA | GSM | - | GSM | - |
| 3G | No | - | No | - |
| 4G/ LTE | No | - | No | - |
| sensors |
| Compass/ Magnetometer | No | Yes | No | Yes |
| Proximity sensor | Yes | Yes | Yes | Yes |
| Accelerometer | Yes | Yes | Yes | Yes |
| Ambient light sensor | Yes | No | Yes | Yes |
| Gyroscope | No | No | No | Yes |
| Barometer | No | No | No | Yes |
| Temperature sensor | No | No | No | No |