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| key specs | ||||
| Display | 6.40-inch | 6.00-inch | 5.50-inch | |
| Processor | Samsung Exynos 7884 | 2.2GHz octa-core | Samsung Exynos 7 Octa 7870 | |
| Front Camera | 8-megapixel | 24-megapixel | 13-megapixel | |
| Rear Camera | 13-megapixel + 5-megapixel | 24-megapixel + 8-megapixel + 5-megapixel | 13-megapixel | |
| RAM | 3GB | 4GB | 3GB | |
| Storage | 32GB | 64GB | 64GB | |
| Battery Capacity | 4000mAh | 3300mAh | 3600mAh | |
| OS | Android | Android 8.0 | Android 7.0 | |
| Resolution | 720x1560 pixels | 1080x2220 pixels | 1080x1920 pixels | |
| general | ||||
| Brand | Samsung | Samsung | Samsung | |
| Model | Galaxy A20 | Galaxy A7 (2018) | Galaxy J7 Pro | |
| Release date | March 1, 2019 | September 1, 2018 | June 1, 2017 | |
| Launched in India | No | Yes | Yes | |
| Form factor | Touchscreen | - | Touchscreen | |
| Dimensions (mm) | 158.40 x 74.70 x 7.80 | 159.80 x 76.80 x 7.50 | 152.40 x 74.70 x 7.90 | |
| Battery capacity (mAh) | 4000 | 3300 | 3600 | |
| Weight (g) | - | 168.00 | - | |
| Removable battery | - | No | No | |
| Wireless charging | - | No | - | |
| Colours | - | Black, Blue, Gold, Pink | Black, Gold | |
| display | ||||
| Screen size (inches) | 6.40 | 6.00 | 5.50 | |
| Touchscreen | Yes | Yes | Yes | |
| Resolution | 720x1560 pixels | 1080x2220 pixels | 1080x1920 pixels | |
| Aspect ratio | - | 18.5:9 | 16:9 | |
| Pixels per inch (PPI) | - | - | 401 | |
| hardware | ||||
| Processor | octa-core (2x1.6GHz + 6x1.35GHz) | 2.2GHz octa-core | 1.6GHz octa-core | |
| Processor make | Samsung Exynos 7884 | - | Samsung Exynos 7 Octa 7870 | |
| RAM | 3GB | 4GB | 3GB | |
| Internal storage | 32GB | 64GB | 64GB | |
| Expandable storage | Yes | Yes | Yes | |
| Expandable storage type | microSD | microSD | microSD | |
| Expandable storage up to (GB) | 512 | 512 | 128 | |
| camera | ||||
| Rear camera | 13-megapixel (f/1.9) + 5-megapixel (f/2.2) | 24-megapixel (f/1.7) + 8-megapixel (f/2.4) + 5-megapixel (f/2.2) | 13-megapixel (f/1.7) | |
| Rear flash | Yes | Yes | LED | |
| Front camera | 8-megapixel (f/2.0) | 24-megapixel (f/2.0) | 13-megapixel (f/1.9) | |
| Rear autofocus | - | Yes | Yes | |
| Front autofocus | - | No | - | |
| Front flash | - | Yes | LED | |
| software | ||||
| Operating system | Android | Android 8.0 | Android 7.0 | |
| connectivity | ||||
| Wi-Fi | Yes | Yes | Yes | |
| Bluetooth | Yes | Yes, v 5.00 | Yes, v 4.10 | |
| Wi-Fi standards supported | - | 802.11 a/b/g/n/ac | 802.11 b/g/n | |
| GPS | - | Yes | Yes | |
| NFC | - | No | Yes | |
| FM | - | Yes | Yes | |
| Number of SIMs | - | 2 | 2 | |
| Active 4G on both SIM cards | - | Yes | - | |
| Infrared | - | - | No | |
| USB OTG | - | - | Yes | |
| Micro-USB | - | - | Yes | |
| Headphones | - | - | 3.5mm | |
| Wi-Fi Direct | - | - | No | |
| Mobile High-Definition Link (MHL) | - | - | No | |
| sensors | ||||
| Fingerprint sensor | Yes | Yes | Yes | |
| Face unlock | - | Yes | - | |
| Compass/ Magnetometer | - | Yes | Yes | |
| Proximity sensor | - | Yes | Yes | |
| Accelerometer | - | Yes | Yes | |
| Ambient light sensor | - | Yes | Yes | |
| Gyroscope | - | Yes | Yes | |
| Barometer | - | - | No | |
| Temperature sensor | - | - | No | |
| ratings | ||||
| Overall NDTV Rating | - | Read Review | - | |
| Design Rating | - | - | ||
| Display Rating | - | - | ||
| Software Rating | - | - | ||
| Performance Rating | - | - | ||
| Battery Life Rating | - | - | ||
| Camera Rating | - | - | ||
| Value for Money Rating | - | - | ||
| sim 1 | ||||
| SIM Type | - | Nano-SIM | Nano-SIM | |
| GSM/CDMA | - | - | GSM | |
| 3G | - | - | No | |
| 4G/ LTE | - | - | Yes | |
| sim 2 | ||||
| SIM Type | - | Nano-SIM | - | |
| 4G/ LTE | - | Yes | Yes | |
| 3G | - | - | No | |