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- Micromax Bolt A66 vs Micromax A68 Smarty 4.0 vs Micromax A57
Micromax Bolt A66 vs Micromax A68 Smarty 4.0 vs Micromax A57 comparison
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| key specs | ||||
| Display | 4.50-inch | 4.00-inch | 3.50-inch | |
| Processor | Spreadtrum SC7710G | MediaTek MT6515 | Qualcomm Snapdragon S1 | |
| Front Camera | 0.3-megapixel | No | No | |
| Rear Camera | 2-megapixel | 5-megapixel | 3-megapixel | |
| RAM | 512MB | 512MB | 256MB | |
| Storage | 512MB | 4GB | 150MB | |
| Battery Capacity | 1500mAh | 1600mAh | 1400mAh | |
| OS | Android 4.1 | Android 4 | Android | |
| Resolution | - | 480x800 pixels | 320x480 pixels | |
| general | ||||
| Brand | Micromax | Micromax | Micromax | |
| Model | Bolt A66 | A68 Smarty 4.0 | A57 | |
| Release date | January 1, 2014 | June 1, 2013 | June 1, 2013 | |
| Battery capacity (mAh) | 1500 | 1600 | 1400 | |
| Removable battery | Yes | Yes | Yes | |
| Alternate names | - | - | Ninja 3.0 | |
| Form factor | - | - | Bar | |
| Dimensions (mm) | - | - | 116.00 x 62.00 x 11.50 | |
| Weight (g) | - | - | 93.80 | |
| Colours | - | - | Black | |
| display | ||||
| Screen size (inches) | 4.50 | 4.00 | 3.50 | |
| Touchscreen | Yes | Yes | Yes | |
| Resolution | - | 480x800 pixels | 320x480 pixels | |
| Pixels per inch (PPI) | - | - | 165 | |
| hardware | ||||
| Processor | 1GHz one-core | 1GHz one-core | 1GHz one-core | |
| Processor make | Spreadtrum SC7710G | MediaTek MT6515 | Qualcomm Snapdragon S1 | |
| RAM | 512MB | 512MB | 256MB | |
| Internal storage | 512MB | 4GB | 150MB | |
| Expandable storage | Yes | Yes | Yes | |
| Expandable storage type | microSD | microSD | microSD | |
| Expandable storage up to (GB) | 32 | 32 | 32 | |
| camera | ||||
| Rear camera | 2-megapixel | 5-megapixel | 3-megapixel | |
| Rear flash | Yes | Yes | No | |
| Front camera | 0.3-megapixel | No | No | |
| software | ||||
| Operating system | Android 4.1 | Android 4 | Android | |
| connectivity | ||||
| Wi-Fi | Yes | Yes | Yes | |
| GPS | Yes | No | Yes | |
| Bluetooth | Yes | Yes | Yes, v 2.10 | |
| NFC | No | No | No | |
| Infrared | No | No | No | |
| USB OTG | No | No | No | |
| Headphones | 3.5mm | - | 3.5mm | |
| FM | Yes | No | Yes | |
| Number of SIMs | 2 | 2 | 2 | |
| Wi-Fi Direct | No | No | No | |
| Mobile High-Definition Link (MHL) | No | No | No | |
| sim 1 | ||||
| SIM Type | Regular | Regular | Regular | |
| GSM/CDMA | GSM | GSM | GSM | |
| 3G | Yes | No | Yes | |
| 4G/ LTE | No | No | No | |
| sim 2 | ||||
| SIM Type | Regular | Regular | Regular | |
| GSM/CDMA | GSM | GSM | GSM | |
| 3G | Yes | No | No | |
| 4G/ LTE | No | No | No | |
| sensors | ||||
| Compass/ Magnetometer | No | No | No | |
| Proximity sensor | No | No | Yes | |
| Accelerometer | No | No | Yes | |
| Ambient light sensor | No | No | No | |
| Gyroscope | No | No | No | |
| Barometer | No | No | No | |
| Temperature sensor | No | No | No | |
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