Asus ZenFone Selfie (3GB RAM, 32GB) vs Sony Xperia U comparison
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| ratings |
| Overall NDTV Rating | Read Review | 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 | 3.50-inch |
| Processor | Qualcomm Snapdragon 615 | ST-Ericsson NovaThor U8500 |
| Front Camera | 13-megapixel | 0.3-megapixel |
| Rear Camera | 13-megapixel | 5-megapixel |
| RAM | 3GB | 512MB |
| Storage | 32GB | 8GB |
| Battery Capacity | 3000mAh | 1320mAh |
| OS | Android 5.0 | Android 2.3 |
| Resolution | 1080x1920 pixels | 480x854 pixels |
| general |
| Alternate names | ZD551KL | ST25i, ST25a |
| Brand | Asus | Sony |
| Model | ZenFone Selfie | Xperia U |
| Release date | June 1, 2015 | May 1, 2012 |
| Form factor | Touchscreen | Bar |
| Dimensions (mm) | 156.50 x 77.20 x 10.80 | 112.00 x 54.00 x 12.00 |
| Weight (g) | 170.00 | 110.00 |
| Battery capacity (mAh) | 3000 | 1320 |
| Removable battery | Yes | Yes |
| Colours | Black, Blue, Glacier Silver, Gold, Grey, Pink, Pure White, Purple, Red, Silver, White | Black, White |
| SAR value | 0.65 | - |
| display |
| Screen size (inches) | 5.50 | 3.50 |
| Touchscreen | Yes | Yes |
| Resolution | 1080x1920 pixels | 480x854 pixels |
| Pixels per inch (PPI) | 403 | 280 |
| hardware |
| Processor | 1.7GHz octa-core | 1GHz dual-core |
| Processor make | Qualcomm Snapdragon 615 | ST-Ericsson NovaThor U8500 |
| RAM | 3GB | 512MB |
| Internal storage | 32GB | 8GB |
| Expandable storage | Yes | No |
| Expandable storage type | microSD | - |
| Expandable storage up to (GB) | 64 | - |
| camera |
| Rear camera | 13-megapixel | 5-megapixel |
| Rear flash | Dual LED | LED |
| Front camera | 13-megapixel | 0.3-megapixel |
| Front flash | Yes | - |
| software |
| Operating system | Android 5.0 | Android 2.3 |
| Skin | ZenUI | - |
| connectivity |
| Wi-Fi | Yes | Yes |
| Wi-Fi standards supported | 802.11 a/b/g/n/ac | 802.11 b/g/n |
| GPS | Yes | Yes |
| Bluetooth | Yes, v 4.00 | Yes, v 2.10 |
| NFC | No | No |
| Infrared | No | No |
| USB OTG | Yes | No |
| Headphones | 3.5mm | 3.5mm |
| FM | Yes | Yes |
| Number of SIMs | 2 | 1 |
| Wi-Fi Direct | No | No |
| Mobile High-Definition Link (MHL) | Yes | No |
| sim 1 |
| SIM Type | Micro-SIM | Micro-SIM |
| GSM/CDMA | GSM | GSM |
| 3G | Yes | Yes |
| 4G/ LTE | Yes | No |
| sim 2 |
| SIM Type | Micro-SIM | - |
| GSM/CDMA | GSM | - |
| 3G | Yes | - |
| 4G/ LTE | Yes | - |
| sensors |
| Compass/ Magnetometer | Yes | Yes |
| Proximity sensor | Yes | Yes |
| Accelerometer | Yes | Yes |
| Ambient light sensor | Yes | Yes |
| Gyroscope | Yes | No |
| Barometer | No | No |
| Temperature sensor | No | No |