Phone Comparison - Samsung Galaxy J7 Perx vs Samsung Galaxy A20 vs LG K51S
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| Manufacturer | Samsung | Samsung | LG |
| Announced | Not Announced Yet | March 2019 | February 2020 |
| Status | Rumored | Coming Soon - April 2019 | Coming Soon - March 2020 |
| Colors | Black, White | Blue, Black | Titanium, Pink, Blue |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension | - | - |
165.2 x 76.7 x 8.2 mm (6.5 x 3.02 x 0.32 in) |
| Weight | - | - | - |
| 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 | 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 / 800 - Taiwan | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 18(800), 19(800), 26(850), 28(700), 38(2600), 39(1900), 40(2300), 41(2500) - Taiwan | LTE | LTE (unspecified) |
| Messaging | SMS, MMS, Push Mail, EMail, IM | ||
| Build Features | - Fingerprint Sensor | - Fingerprint Sensor |
- Fingerprint Sensor MIL-STD-810G compliant |
| Notification LED | Yes | - | - |
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| OS | Android OS, v7.0 (Nougat) | Android 9.0 (Pie) | Android 10.0 |
| Processor | Octa-core 2.0 GHz Cortex-A53, Qualcomm MSM8953 Snapdragon 625 | Octa-core (2x1.6 GHz & 6x1.35 GHz), Exynos 7884 Octa | Octa-core 2.3 GHz |
| GPU | Adreno 506 | - | - |
| RAM | 2/3 GB | 3 GB | 3 GB |
| Internal Memory | 16/32 GB | 32 GB | 64 GB |
| External Memory | microSD, up to 256 GB | microSD, up to 512 GB (dedicated slot) | microSDXC (dedicated slot) |
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| Type | Super AMOLED Capacitive Touchscreen, Corning Gorilla Glass 3 | Super AMOLED Capacitive Touchscreen | IPS LCD 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) | 720 x 1560 pixels (268 ppi) | 720 x 1600 pixels (270 ppi) |
| Screen-to-Body Ratio | - | - | 80.46% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM Radio | FM radio | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4160 x 3120 pixels | 13 MP + 5 MP | 32 MP + 5 MP + 2 MP + 2 MP |
| Flash | Dual-LED (dual Tone) | LED Flash | LED flash |
| Features | Phase Detection Autofocus (PDAF), f/1.9 aperture, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | 13 MP, f/1.9, 28mm (wide), AF 5 MP, f/2.2, depth sensor Panorama, HDR |
32 MP, (wide), PDAF 5 MP, (ultrawide) 2 MP (macro) 2 MP (depth) panorama, HDR |
| Video | 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | 5 MP [Similar] | 8 MP, f/2.0 [Similar] |
13 MP HDR 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps, VoLTE | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA 42.2/5.76 Mbps, LTE-A |
| Bluetooth | v4.2, A2DP, EDR, LE | 4.2, A2DP, LE | 5.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, 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 | Type-C 1.0 reversible connector | microUSB 2.0 | 2.0, Type-C 1.0 reversible connector |
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS |
| Browser | HTML5 | Yes | Yes |
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| Internal | 16/32 GB, 2/3 GB RAM | 32 GB, 3 GB RAM | 64 GB, 3 GB RAM |
| Expandable Storage | microSD, up to 256 GB | microSD, up to 512 GB (dedicated slot) | 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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| Magnetic-Field Sensor (Compass) | |
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| NFC | |
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| Type | Non-removable Li-Ion Battery | Non-removable Li-Po Battery | Non-removable Li-Po Battery |
| Capacity | 3300 mAh | 4000 mAh | 4000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
