Phone Comparison - Samsung Galaxy J7 (2017) vs Samsung Galaxy A21 vs Samsung Galaxy A21s
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| Manufacturer | Samsung | Samsung | Samsung |
| Announced | June 2017 | 2020, April 8 | Expected Announcement - May 2020 |
| Status | Available - July 2017 | Coming soon. Exp. release 2020, April | Rumored |
| Price | Rs. 24,500 ($330.00) [Similarly Priced] | - | - |
| Colors | Gold, Black, Pink, Blue | Various | Black, White, Blue |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
152.4 x 74.7 x 7.9 mm (6 x 2.94 x 0.31 in) |
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8.9 mm thickness (0.35 in thickness) |
| Weight | - | - | 191 g (6.74 oz) |
| SIM Type | Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM only) | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 - J710F, J710H HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - J710M |
HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 1700(AWS) / 1900 / 2100 |
HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 40(2300) - J710F | LTE | LTE |
| Messaging | SMS, MMS, EMail, IM | ||
| Build Features | - | - Fingerprint Sensor Glass front, plastic back, plastic frame |
- Fingerprint Sensor |
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| OS | Android OS, v7.1 (Nougat) | Android 10.0 | Android 10.0 |
| User Interface | - | One UI 2.0 | One UI 2.0 |
| Processor | Octa-core 1.6 GHz Cortex-A53, Exynos 7870 | Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53), Mediatek MT6765 Helio P35 (12nm) | Octa-core 2.0 GHz, Exynos 850 |
| GPU | Mali-T830 MP2 | PowerVR GE8320 | - |
| RAM | 3 GB | 3 GB | 3 GB |
| Internal Memory | 16 GB | 64 GB | 64 GB |
| External Memory | microSD, up to 256 GB | microSDXC (dedicated slot) | microSDXC |
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| Type | Super AMOLED capacitive touchscreen, 2.5D Gorilla Glass | HD+ Super AMOLED Capacitive Touchscreen | PLS TFT Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.5 inches | 6.5 inches | 6.55 inches |
| Resolution | 1080 x 1920 pixels (401 ppi) | 720 x 1600 pixels (270 ppi) | 720 x 1600 pixels (268 ppi) |
| Screen-to-Body Ratio | 73.08% | - | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio, RDS, recording | FM radio | - |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP | 16 MP + 8 MP + 2 MP + 2 MP | 48 MP + 8 MP + 2 MP |
| Flash | LED Flash | No | LED Flash |
| Features | Autofocus, f/1.7, 28mm, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | 16 MP, f/1.9, 28mm (wide), AF 8 MP, f/2.2, 12mm (ultrawide) 2 MP, (macro) 2 MP, (depth) panorama, HDR |
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.4, (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) Panorama, HDR |
| Video | 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | 13 MP, f/1.9 [Similar] |
13 MP HDR 1080p@30fps [Similar] |
13 MP, f/2.3, 29mm (normal), 1/3.1", 1.12µm HDR, Panorama 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE Cat4 150/50 Mbps | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA 42.2/5.76 Mbps, LTE-A |
| Bluetooth | v4.1, A2DP | 5.0, A2DP, LE | 5.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | microUSB v2.0 | 2.0, Type-C 1.0 reversible connector, USB On-The-Go | Yes |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS |
| Browser | HTML5 | Yes | Yes |
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| Internal | 16 GB, 3 GB RAM | 64 GB, 3 GB RAM eMMC 5.1 | 64 GB, 3 GB RAM or 32 GB, 3 GB RAM |
| Expandable Storage | microSD, up to 256 GB | microSDXC (dedicated slot) | microSDXC |
| USB OTG | Supported | Supported | Supported |
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| Fingerprint | |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| Magnetic-Field Sensor (Compass) | |
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| Gyroscope Sensor | |
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| NFC | |
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| Type | Non-removable Li-Ion Battery | Non-removable Li-Po Battery Fast battery charging 15W |
Non-removable Li-Po Battery Battery Charging 10W |
| Capacity | 3600 mAh | 4000 mAh | 5000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
