Phone Comparison - Samsung Galaxy J7 Prime vs Samsung Galaxy A31 vs Samsung Galaxy A21
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| Price Comparison (India) | - | - | |
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| Manufacturer | Samsung | Samsung | Samsung |
| Announced | August 2016 | 2020, March 24 | 2020, April 8 |
| Status | Available - September 2016 | Coming Soon - April 2020 | Coming soon. Exp. release 2020, April |
| Price | Rs. 18,790 ($276.32) [Similarly Priced] | - | - |
| Colors | Gold, Black | Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White | Various |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
151.7 x 75 x 8 mm (5.97 x 2.95 x 0.31 in) |
159.3 x 73.1 x 8.6 mm (6.27 x 2.88 x 0.34 in) |
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| Weight | 167 g (5.89 oz) | 185 g (6.53 oz) | - |
| SIM Type | Dual-SIM | 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 model only) | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM 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 / 900 / 1900 / 2100 HSDPA 850 / 1700(AWS) / 1900 / 2100 |
| 4G Network | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 40(2300) - J710F | LTE (unspecified) | LTE |
| Messaging | SMS, MMS, EMail, IM | ||
| Build Features | - Fingerprint Sensor - Metal Build - 2.5D Curved Glass |
- Fingerprint Sensor (under display, optical) |
- Fingerprint Sensor Glass front, plastic back, plastic frame |
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| OS | Android OS, v6.0.1 (Marshmallow) | Android 10.0 | Android 10.0 |
| User Interface | - | One UI 2.0 | One UI 2.0 |
| Processor | Octa-core 1.6 GHz, Exynos 7870 | Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55), Mediatek MT6768 Helio P65 (12nm) | Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53), Mediatek MT6765 Helio P35 (12nm) |
| GPU | Mali-T830 MP2 | Mali-G52 MC2 | PowerVR GE8320 |
| RAM | 3 GB | 6 GB | 3 GB |
| Internal Memory | 16/32 GB | 128 GB | 64 GB |
| External Memory | microSD, up to 128 GB | microSDXC | microSDXC (dedicated slot) |
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| Type | TFT capacitive touchscreen | Super AMOLED Capacitive Touchscreen | HD+ Super AMOLED Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.5 inches | 6.4 inches | 6.5 inches |
| Resolution | 1080 x 1920 pixels (401 ppi) | 1080 x 2400 pixels (411 ppi) | 720 x 1600 pixels (270 ppi) |
| Screen-to-Body Ratio | 73.12% | 85.01% | - |
| 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 | 48 MP + 8 MP + 5 MP + 5 MP | 16 MP + 8 MP + 2 MP + 2 MP |
| Flash | LED Flash | LED flash | No |
| Features | Autofocus, f/1.9, 28mm, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | 48 MP, f/2.0, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.4, (macro) 5 MP, f/2.4, (depth) 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 |
| Video | 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | 8 MP, f/1.9 [Similar] |
20 MP, f/2.2, 0.8µm HDR 1080p@30fps [Similar] |
13 MP HDR 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE Cat4 150/50 Mbps | HSPA, LTE-A | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| 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 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | microUSB v2.0, USB OTG | 2.0, Type-C 1.0 reversible connector, USB On-The-Go | 2.0, Type-C 1.0 reversible connector, USB On-The-Go |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, GALILEO, BDS | Yes, with A-GPS, GLONASS, BDS |
| Browser | HTML5 | Yes | Yes |
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| Internal | 16/32 GB, 3 GB RAM | 128 GB, 6 GB RAM or 64 GB, 4 GB RAM (UFS 2.1) | 64 GB, 3 GB RAM eMMC 5.1 |
| Expandable Storage | microSD, up to 128 GB | microSDXC | microSDXC (dedicated slot) |
| 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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| 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 Fast battery charging 15W |
| Capacity | 3300 mAh | 5000 mAh | 4000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
Rs. 18,790 
Rs. 18,700 
Rs. 18,790 
