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Asus ROG Phone vs Vivo X21 vs Razer Phone 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 | 6.00-inch | 6.28-inch | 5.70-inch | |
| Processor | Qualcomm Snapdragon 845 | Qualcomm Snapdragon 660 | Qualcomm Snapdragon 835 | |
| Front Camera | 8-megapixel | 12-megapixel | 8-megapixel | |
| Rear Camera | 12-megapixel + 8-megapixel | 12-megapixel + 5-megapixel | 12-megapixel | |
| RAM | 8GB | 6GB | 8GB | |
| Storage | 128GB | 128GB | 64GB | |
| Battery Capacity | 4000mAh | 3200mAh | 4000mAh | |
| OS | Android 8.1 | Android 8.1 | Android 7.1.1 | |
| Resolution | 1080x2160 pixels | 1080x2280 pixels | 1440x2560 pixels | |
| general | ||||
| Brand | Asus | Vivo | Razer | |
| Model | ROG Phone | X21 | Phone | |
| Release date | June 1, 2018 | March 1, 2018 | November 1, 2017 | |
| Launched in India | Yes | Yes | - | |
| Form factor | Touchscreen | Touchscreen | - | |
| Body type | Glass | - | - | |
| Dimensions (mm) | 158.80 x 76.20 x 8.60 | 154.50 x 74.80 x 7.40 | 158.50 x 77.70 x 8.00 | |
| Weight (g) | 200.00 | 156.20 | 197.00 | |
| Battery capacity (mAh) | 4000 | 3200 | 4000 | |
| Removable battery | No | No | No | |
| Fast charging | Quick Charge 4+ | Proprietary | - | |
| Wireless charging | No | - | - | |
| Colours | Black | Black, Gold | Black | |
| display | ||||
| Screen size (inches) | 6.00 | 6.28 | 5.70 | |
| Touchscreen | Yes | Yes | Yes | |
| Resolution | 1080x2160 pixels | 1080x2280 pixels | 1440x2560 pixels | |
| Protection type | Gorilla Glass | - | - | |
| Aspect ratio | 18:9 | 19:9 | - | |
| hardware | ||||
| Processor | 2.96GHz octa-core (4x2.96GHz + 4x1.7GHz) | 2.2GHz octa-core | quad-core | |
| Processor make | Qualcomm Snapdragon 845 | Qualcomm Snapdragon 660 | Qualcomm Snapdragon 835 | |
| RAM | 8GB | 6GB | 8GB | |
| Internal storage | 128GB | 128GB | 64GB | |
| Expandable storage | No | Yes | Yes | |
| Dedicated microSD slot | No | - | - | |
| Expandable storage type | - | microSD | microSD | |
| Expandable storage up to (GB) | - | 256 | 2000 | |
| camera | ||||
| Rear camera | 12-megapixel (f/1.8, 1.4-micron) + 8-megapixel | 12-megapixel (f/1.8, 1.4-micron) + 5-megapixel (f/2.4) | 12-megapixel | |
| Rear flash | LED | LED | Dual LED | |
| Front camera | 8-megapixel (f/2.0) | 12-megapixel (f/2.0) | 8-megapixel | |
| Rear autofocus | - | Phase detection autofocus | - | |
| software | ||||
| Operating system | Android 8.1 | Android 8.1 | Android 7.1.1 | |
| Skin | ROG Gaming UI | FunTouch 4.0 | - | |
| connectivity | ||||
| Wi-Fi | Yes | Yes | Yes | |
| Wi-Fi standards supported | 802.11 a/b/g/n/ac | 802.11 a/b/g/n/ac | 802.11 a/b/g/n/ac | |
| GPS | Yes | Yes | Yes | |
| Bluetooth | Yes, v 5.00 | Yes, v 5.00 | Yes | |
| NFC | Yes | No | Yes | |
| USB Type-C | Yes | - | - | |
| Headphones | 3.5mm | 3.5mm | No | |
| FM | Yes | No | No | |
| Number of SIMs | 2 | 2 | 1 | |
| Wi-Fi Direct | Yes | - | No | |
| Active 4G on both SIM cards | Yes | - | - | |
| Infrared | - | No | No | |
| USB OTG | - | Yes | Yes | |
| Micro-USB | - | Yes | - | |
| Mobile High-Definition Link (MHL) | - | - | No | |
| sim 1 | ||||
| SIM Type | Nano-SIM | Nano-SIM | Nano-SIM | |
| 3G | Yes | Yes | Yes | |
| 4G/ LTE | Yes | Yes | Yes | |
| GSM/CDMA | - | GSM | GSM | |
| sensors | ||||
| Fingerprint sensor | Yes | Yes | - | |
| Compass/ Magnetometer | Yes | Yes | Yes | |
| Proximity sensor | Yes | Yes | Yes | |
| Accelerometer | Yes | Yes | Yes | |
| Ambient light sensor | Yes | Yes | Yes | |
| Gyroscope | Yes | Yes | Yes | |
| Barometer | - | - | Yes | |
| Temperature sensor | - | - | No | |
| sim 2 | ||||
| SIM Type | - | Nano-SIM | - | |
| GSM/CDMA | - | GSM | - | |
| 3G | - | Yes | - | |
| 4G/ LTE | - | Yes | - | |
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