Phone Comparison - Samsung Galaxy S8 Active vs Google Pixel 3a XL vs Samsung Galaxy A51 5G
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| Manufacturer | Samsung | Samsung | |
| Announced | August 2017 | 2019, May | April 2020 |
| Status | Available - August 2017 | Available. Released 2019, May | Coming Soon - April 2020 |
| Colors | Meteor Grey, Tungsten Gold | Clearly White, Just Black, Purple-ish | Prism Cube Black, Prism Cube White, Prism Cube Pink |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
151.9 x 74.9 x 9.9 mm (5.98 x 2.95 x 0.39 in) |
160.1 x 76.1 x 8.2 mm (6.3 x 3 x 0.32 in) |
158.9 x 73.6 x 8.7 mm (6.26 x 2.9 x 0.34 in) |
| Weight | 208.1 g (7.34.0.04 oz) | 167 g (5.89 oz) | 187 g (6.6 oz) |
| SIM Type | Dual-SIM | Nano-SIM | 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 CDMA2000 1xEV-DO |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G Network | HSDPA | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G Network | LTE | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 29(700), 32(1500), 38(2600), 39(1900), 40(2300), 41(2500), 42(3500), 46, 66(1700/2100), 71(600) | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 20(800), 26(850), 28(700), 38(2600), 40(2300), 41(2500), 66(1700/2100) |
| 5G Network | - | - | 5G SA/NSA |
| Messaging | SMS, MMS, EMail, IM | ||
| Build Features | Samsung Pay IP68 certified MIL-STD-810G certified - dust, humidity, rain, vibration, and shock resistant |
- Fingerprint Sensor - IP68 dust/water resistant (up to 1.5m for 30 mins) |
- Fingerprint Sensor (under display, optical) |
| Notification LED | Yes | Yes | - |
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| OS | Android OS, v7.0 (Nougat) | Android 9.0 (Pie) | Android 10.0 |
| Processor | Octa-core (4x2.35 GHz Kryo & 4x1.9 GHz Kryo), Qualcomm MSM8998 Snapdragon 835 | Octa-core (2x2.2 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver), Qualcomm SDM710 Snapdragon 710 (10 nm) | Octa-core (2x2.2 GHz Cortex-A77 & 6x1.8 GHz Cortex A55), Exynos 980 (8 nm) |
| GPU | Adreno 540 | Adreno 615 | Mali-G76 MP5 |
| RAM | 4 GB | 4 GB | 8 GB |
| Internal Memory | 64 GB | 32/64 GB | 128 GB |
| External Memory | microSD, up to 256 GB (dedicated slot) | No | microSDXC (dedicated slot) |
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| Type | Super AMOLED capacitive touchscreen, Gorilla Glass 5 | P-OLED Capacitive Touchscreen, Corning Gorilla Glass 5 | Super AMOLED Capacitive Touchscreen Corning Gorilla Glass 3 |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.8 inches | 6 inches | 6.5 inches |
| Resolution | 1440 x 2960 pixels (568 ppi) | 1080 x 2160 pixels (402 ppi) | 1080 x 2400 pixels (405 ppi) |
| Screen-to-Body Ratio | 74.92% | 76.44% | 87.17% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | No | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 12 MP | 12.2 MP | 48 MP + 12 MP + 5 MP + 5 MP |
| Flash | Dual-LED (Dual Tone) | Dual-LED Flash | LED flash |
| Features | Phase Detection Autofocus, f/1.7 aperture, OIS, Geo-tagging, Simultaneous 4K Video And Image Recording, Touch Focus, Face/smile Detection, Auto HDR, Panorama | 12.2 MP, f/1.8, 28mm (wide), 1/2.55", 1.4µm, OIS, dual pixel PDAF Auto-HDR, Panorama |
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 12 MP, f/2.2, 12mm (ultrawide) 5 MP, f/2.4, 25mm (macro), 1/5.0", 1.12µm 5 MP, f/2.2, (depth) HDR, panorama |
| Video | 2160p@60fps, 1080p@120fps, HDR, dual-video rec. | 2160p@30fps, 1080p@30/60/120fps, 720p@240fps, 1080p@30fps (gyro-EIS) | 2160p@30fps, 1080p@30/120fps; gyro-EIS |
| Front Camera | 8 MP, AF [Similar] |
8 MP, f/1.8, 28mm, PDAF No AF, Auto-HDR, 1080p@30fps [Similar] |
32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm HDR 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE, VoLTE | HSPA 42.2/5.76 Mbps, LTE-A (5CA) Cat16 1024/75 Mbps | HSPA, LTE-A, 5G |
| Bluetooth | v4.2, A2DP, LE, aptX | 5.0, A2DP, LE, aptX HD | 5.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot |
| USB | v3.1, Type-C 1.0 reversible connector | 2.0, Type-C 1.0 reversible connector | 2.0, Type-C 1.0 reversible connector, USB On-The-Go |
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS, BDS, GALILEO | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| Browser | HTML5 | Yes | Yes |
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| Internal | 64 GB, 4 GB RAM | 32/64 GB, 4 GB RAM | 128 GB, 8 GB RAM or 128 GB, 6 GB RAM (UFS 2.0) |
| Expandable Storage | microSD, up to 256 GB (dedicated slot) | No | 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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| Barometer Sensor | |
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| Heart-rate Sensor | |
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| NFC | |
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| Type | Non-removable Li-Ion battery | Non-removable Li-Ion Battery Fast Battery Charging 18W |
Non-removable Li-Po Battery Fast battery charging 15W |
| Capacity | 4000 mAh | 3700 mAh | 4500 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
