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- Vivo X21s vs Samsung Galaxy A7 (2018) vs Samsung Galaxy A8 Star vs Samsung Galaxy A8+ (2018)
Vivo X21s vs Samsung Galaxy A7 (2018) vs Samsung Galaxy A8 Star vs Samsung Galaxy A8+ (2018) comparison
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| key specs | ||||
| Display | 6.41-inch | 6.00-inch | 6.28-inch | 6.00-inch |
| Processor | Qualcomm Snapdragon 660 | 2.2GHz octa-core | Qualcomm Snapdragon 660 | 1.6GHz octa-core |
| Front Camera | 24.8-megapixel | 24-megapixel | 24-megapixel | 16-megapixel |
| Rear Camera | 12-megapixel + 5-megapixel | 24-megapixel + 8-megapixel + 5-megapixel | 16-megapixel + 24-megapixel | 16-megapixel |
| RAM | 6GB | 4GB | 6GB | 6GB |
| Storage | 128GB | 64GB | 64GB | 64GB |
| Battery Capacity | 3400mAh | 3300mAh | 3700mAh | 3500mAh |
| OS | Android 8.1 Oreo | Android 8.0 | Android 8.0 | Android 7.1.1 |
| Resolution | 1080x2340 pixels | 1080x2220 pixels | 1880x2220 pixels | 1080x2220 pixels |
| general | ||||
| Brand | Vivo | Samsung | Samsung | Samsung |
| Model | X21s | Galaxy A7 (2018) | Galaxy A8 Star | Galaxy A8+ (2018) |
| Release date | November 1, 2018 | September 1, 2018 | June 1, 2018 | December 1, 2017 |
| Form factor | Touchscreen | - | Touchscreen | Touchscreen |
| Dimensions (mm) | 157.91 x 75.08 x 7.90 | 159.80 x 76.80 x 7.50 | 162.40 x 77.00 x 7.50 | 159.90 x 75.70 x 8.30 |
| Weight (g) | 156.00 | 168.00 | 188.00 | 191.00 |
| Battery capacity (mAh) | 3400 | 3300 | 3700 | 3500 |
| Colours | Starry Night Black | Black, Blue, Gold, Pink | Black, White | Black, Orchid Grey, Gold, Blue |
| Launched in India | - | Yes | Yes | - |
| Removable battery | - | No | - | - |
| Wireless charging | - | No | - | - |
| display | ||||
| Screen size (inches) | 6.41 | 6.00 | 6.28 | 6.00 |
| Touchscreen | Yes | Yes | Yes | Yes |
| Resolution | 1080x2340 pixels | 1080x2220 pixels | 1880x2220 pixels | 1080x2220 pixels |
| Aspect ratio | 19.5:9 | 18.5:9 | 18.5:9 | - |
| hardware | ||||
| Processor | octa-core | 2.2GHz octa-core | octa-core | 1.6GHz octa-core |
| Processor make | Qualcomm Snapdragon 660 | - | Qualcomm Snapdragon 660 | - |
| RAM | 6GB | 4GB | 6GB | 6GB |
| Internal storage | 128GB | 64GB | 64GB | 64GB |
| Expandable storage | Yes | Yes | Yes | Yes |
| Expandable storage type | microSD | microSD | microSD | microSD |
| Expandable storage up to (GB) | 256 | 512 | 256 | 256 |
| camera | ||||
| Rear camera | 12-megapixel + 5-megapixel | 24-megapixel (f/1.7) + 8-megapixel (f/2.4) + 5-megapixel (f/2.2) | 16-megapixel (f/1.7) + 24-megapixel (f/1.7) | 16-megapixel |
| Rear autofocus | Yes | Yes | - | - |
| Front camera | 24.8-megapixel | 24-megapixel (f/2.0) | 24-megapixel (f/2.0) | 16-megapixel |
| Rear flash | - | Yes | LED | LED |
| Front autofocus | - | No | - | - |
| Front flash | - | Yes | - | - |
| software | ||||
| Operating system | Android 8.1 Oreo | Android 8.0 | Android 8.0 | Android 7.1.1 |
| connectivity | ||||
| Wi-Fi | Yes | Yes | Yes | Yes |
| GPS | Yes | Yes | Yes | Yes |
| Bluetooth | Yes | Yes, v 5.00 | Yes, v 5.00 | Yes, v 5.00 |
| Micro-USB | Yes | - | - | - |
| Headphones | 3.5mm | - | - | 3.5mm |
| Number of SIMs | 2 | 2 | 2 | - |
| 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 |
| NFC | - | No | - | Yes |
| FM | - | Yes | - | - |
| Active 4G on both SIM cards | - | Yes | - | - |
| USB Type-C | - | - | Yes | - |
| sim 1 | ||||
| GSM/CDMA | GSM | - | GSM + CDMA | - |
| 3G | Yes | - | - | - |
| 4G/ LTE | Yes | - | - | - |
| SIM Type | - | Nano-SIM | - | - |
| sim 2 | ||||
| GSM/CDMA | GSM | - | GSM + CDMA | - |
| 3G | Yes | - | - | - |
| 4G/ LTE | Yes | Yes | - | - |
| SIM Type | - | Nano-SIM | - | - |
| sensors | ||||
| Face unlock | Yes | Yes | Yes | - |
| Fingerprint sensor | Yes | Yes | Yes | - |
| Compass/ Magnetometer | Yes | Yes | - | Yes |
| Proximity sensor | Yes | Yes | Yes | Yes |
| Accelerometer | Yes | Yes | Yes | Yes |
| Ambient light sensor | Yes | Yes | Yes | - |
| Gyroscope | Yes | Yes | - | Yes |
| Barometer | - | - | - | Yes |
| 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 | - | - | ||
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