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| ratings | ||||
| Overall NDTV Rating | Read Review | - | - | |
| Design Rating | - | - | ||
| Display Rating | - | - | ||
| Software Rating | - | - | ||
| Performance Rating | - | - | ||
| Battery Life Rating | - | - | ||
| Camera Rating | - | - | ||
| Value for Money Rating | - | - | ||
| key specs | ||||
| Display | 5.50-inch | 5.50-inch | 4.70-inch | |
| Processor | Qualcomm Snapdragon 615 | 1.4GHz octa-core | 1.7GHz quad-core | |
| Front Camera | 13-megapixel | 5-megapixel | 2.1-megapixel | |
| Rear Camera | 13-megapixel | 13-megapixel | 4-Ultrapixel | |
| RAM | 3GB | 1GB | 2GB | |
| Storage | 32GB | 8GB | 32GB | |
| Battery Capacity | 3000mAh | 3200mAh | 2300mAh | |
| OS | Android 5.0 | Android 4.4 | Android 4.1 | |
| Resolution | 1080x1920 pixels | 720x1280 pixels | 1080x1920 pixels | |
| general | ||||
| Alternate names | ZD551KL | 6042D | - | |
| Brand | Asus | Alcatel | HTC | |
| Model | ZenFone Selfie | One Touch Flash | One dual SIM | |
| Release date | June 1, 2015 | September 1, 2014 | August 1, 2013 | |
| Form factor | Touchscreen | Touchscreen | Bar | |
| Dimensions (mm) | 156.50 x 77.20 x 10.80 | 152.10 x 76.20 x 8.10 | 137.40 x 68.20 x 9.30 | |
| Weight (g) | 170.00 | 150.00 | 143.00 | |
| Battery capacity (mAh) | 3000 | 3200 | 2300 | |
| Removable battery | Yes | No | No | |
| Colours | White, Pink, Aqua Blue | - | - | |
| SAR value | 0.65 | - | - | |
| display | ||||
| Screen size (inches) | 5.50 | 5.50 | 4.70 | |
| Touchscreen | Yes | Yes | Yes | |
| Resolution | 1080x1920 pixels | 720x1280 pixels | 1080x1920 pixels | |
| Pixels per inch (PPI) | 403 | - | 468 | |
| hardware | ||||
| Processor | 1.7GHz octa-core | 1.4GHz octa-core | 1.7GHz quad-core | |
| Processor make | Qualcomm Snapdragon 615 | - | - | |
| RAM | 3GB | 1GB | 2GB | |
| Internal storage | 32GB | 8GB | 32GB | |
| Expandable storage | Yes | Yes | Yes | |
| Expandable storage type | microSD | microSD | microSD | |
| Expandable storage up to (GB) | 64 | 32 | 64 | |
| camera | ||||
| Rear camera | 13-megapixel | 13-megapixel | 4-Ultrapixel | |
| Rear flash | Dual LED | LED | LED | |
| Front camera | 13-megapixel | 5-megapixel | 2.1-megapixel | |
| Front flash | Yes | - | - | |
| software | ||||
| Operating system | Android 5.0 | Android 4.4 | Android 4.1 | |
| Skin | ZenUI | - | - | |
| connectivity | ||||
| Wi-Fi | Yes | Yes | Yes | |
| Wi-Fi standards supported | 802.11 a/b/g/n/ac | 802.11 b/g/n | 802.11 a/b/g/n/ac | |
| GPS | Yes | Yes | Yes | |
| Bluetooth | Yes, v 4.00 | Yes, v 4.00 | Yes | |
| NFC | No | Yes | Yes | |
| Infrared | No | No | Yes | |
| USB OTG | Yes | No | No | |
| Headphones | 3.5mm | 3.5mm | 3.5mm | |
| FM | Yes | Yes | Yes | |
| Number of SIMs | 2 | 1 | 2 | |
| Wi-Fi Direct | No | Yes | Yes | |
| Mobile High-Definition Link (MHL) | Yes | No | Yes | |
| sim 1 | ||||
| SIM Type | Micro-SIM | Regular | Micro-SIM | |
| GSM/CDMA | GSM | GSM | GSM | |
| 3G | Yes | Yes | Yes | |
| 4G/ LTE | Yes | Yes | Yes | |
| sim 2 | ||||
| SIM Type | Micro-SIM | - | Micro-SIM | |
| GSM/CDMA | GSM | - | CDMA | |
| 3G | Yes | - | No | |
| 4G/ LTE | Yes | - | No | |
| sensors | ||||
| Compass/ Magnetometer | Yes | Yes | Yes | |
| Proximity sensor | Yes | Yes | Yes | |
| Accelerometer | Yes | Yes | Yes | |
| Ambient light sensor | Yes | Yes | Yes | |
| Gyroscope | Yes | No | Yes | |
| Barometer | No | No | No | |
| Temperature sensor | No | No | No | |