Phone Comparison - Samsung Galaxy A40 vs Xiaomi Redmi 8A Dual vs LG K51S
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| Manufacturer | Samsung | Xiaomi | LG |
| Announced | March 2019 | February 2020 | February 2020 |
| Status | Coming Soon - April 2019 | Coming Soon - February 18, 2020 | Coming Soon - March 2020 |
| Price | - | Rs. 6,499 ($0.00) [Similarly Priced] | - |
| Colors | Black, White, Blue, Coral | Midnight Grey, Sea Blue, Sky White | Titanium, Pink, Blue |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
144.3 x 69.1 x 7.9 mm (5.68 x 2.72 x 0.31 in) |
156.3 × 75.4 × 9.4 mm (6.15 × 2.97 × 0.37 in) |
165.2 x 76.7 x 8.2 mm (6.5 x 3.02 x 0.32 in) |
| Weight | - | 188 g (6.63 oz) | - |
| SIM Type | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) with dedicated microSD card slot | 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 CDMA 800 & TD-SCDMA |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300), 41(2500) | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) | LTE (unspecified) |
| Messaging | |||
| Build Features | - Fingerprint Sensor |
- | - Fingerprint Sensor MIL-STD-810G compliant |
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| OS | Android 9.0 (Pie) | Android 9.0 (Pie) | Android 10.0 |
| User Interface | - | MIUI 11 | - |
| Processor | Octa-core (2x1.8 GHz Cortex-A73 & 6x1.6 GHz Cortex-A53), Exynos 7885 Octa (14 nm) | Octa-core (2x2.0 GHz Cortex-A53 & 6x1.45 GHz Cortex A53), Qualcomm SDM439 Snapdragon 439 (12 nm) | Octa-core 2.3 GHz |
| GPU | Mali-G71 | Adreno 505 | - |
| RAM | 4 GB | 3 GB | 3 GB |
| Internal Memory | 64 GB | 32 GB | 64 GB |
| External Memory | microSD, up to 512 GB (dedicated slot) | microSD, up to 512 GB (dedicated slot) | microSDXC (dedicated slot) |
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| Type | Super AMOLED Capacitive Touchscreen | IPS LCD Capacitive Touchscreen | IPS LCD Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.9 inches | 6.22 inches | 6.5 inches |
| Resolution | 1080 x 2280 pixels (428 ppi) | 720 x 1520 pixels (270 ppi) | 720 x 1600 pixels (270 ppi) |
| Screen-to-Body Ratio | 86.97% | - | 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 | 16 MP + 5 MP | 13 MP + 2 MP | 32 MP + 5 MP + 2 MP + 2 MP |
| Flash | LED Flash | LED Flash | LED flash |
| Features | 16 MP, f/2.0, PDAF 5 MP, f/2.2, 12mm, (ultrawide) Panorama, HDR |
13 MP, f/2.2, 1.25µm, PDAF 2 MP, f/2.4, depth sensor Panorama |
32 MP, (wide), PDAF 5 MP, (ultrawide) 2 MP (macro) 2 MP (depth) panorama, HDR |
| Video | 2160p@30fps, 1080p@30fps | 1080p@30/60fps | 1080p@30fps |
| Front Camera | 25 MP, 1080p@30fps [Similar] | 8 MP, HDR, 1080p@30fps [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-A (2CA) Cat12 600/150 Mbps | HSPA, LTE | HSPA 42.2/5.76 Mbps, LTE-A |
| Bluetooth | 4.2, A2DP, LE | 5.0, A2DP, LE | 5.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | Type-C 1.0 reversible connector | 2.0, Type-C 1.0 reversible connector, USB On-The-Go | 2.0, Type-C 1.0 reversible connector |
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS | Yes, with A-GPS |
| Browser | Yes | Yes | Yes |
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| Internal | 64 GB, 4 GB RAM | 32 GB, 3 GB RAM or 32 GB, 2 GB RAM | 64 GB, 3 GB RAM |
| Expandable Storage | microSD, up to 512 GB (dedicated slot) | 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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| Gyroscope Sensor | |
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| NFC | |
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| Type | Non-removable Li-Po Battery | Non-removable Li-Po Battery Type-C Fast charger 18W |
Non-removable Li-Po Battery |
| Capacity | 3100 mAh | 5000 mAh | 4000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
