Phone Comparison - Samsung Galaxy Alpha (S801) vs HTC Desire 510 vs HTC Desire 820
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| Manufacturer | Samsung | HTC | HTC |
| Announced | August 2014 | August 2014 | September 2014 |
| Status | Available - September 2014 | Available - August 2014 | Coming Soon - September 2014 |
| Colors | Charcoal Black, Sleek Silver, Dazzling White, Frosted Gold, Scub | Black, White | Marble White, Tuxedo Grey, Santorini White, Milky-way Grey, Tang |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
132.4 x 65.5 x 6.7 mm (5.21 x 2.58 x 0.26 in) |
139.9 x 69.8 x 9.99 mm (5.51 x 2.75 x 0.39 in) |
157.7 x 78.7 x 7.7 mm (6.21 x 3.1 x 0.3 in) |
| Weight | 115 g (4.06 oz) | 158 g (5.57 oz) | 155 g (5.47 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 - EMEA version HSDPA 900 / 2100 - Asia version |
| 4G Network | LTE | LTE 800 / 1800 / 2600 | LTE 900 / 1800 / 2100 / 2600 - EMEA version |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail |
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| OS | Android OS, v4.4.4 (KitKat) | Android OS, v4.4.2 (KitKat) with HTC Sense | Android OS, v4.4.2 (KitKat) |
| Processor | Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801 | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 410 | Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 |
| GPU | Adreno 330 | Adreno 305 | Adreno 405 |
| RAM | 2 GB | 1 GB | 2 GB |
| Internal Memory | 32 GB | 8 GB | 16 GB |
| External Memory | No | microSD, up to 128 GB | microSD, up to 128 GB |
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| Type | Super AMOLED capacitive touchscreen | TFT Capacitive Touchscreen | LCD Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.7 inches | 4.7 inches | 5.5 inches |
| Resolution | 720 x 1280 pixels (312 ppi) | 480 x 854 pixels (208 ppi) | 720 x 1280 pixels (267 ppi) |
| Screen-to-Body Ratio | 70.43% | 62.60% | 67.20% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | - | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 12 MP, 4128 x 3096 pixels | 5 MP, 2592х1944 pixels | 13 MP, 4160 x 3120 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Dual Camera, Geo-tagging, Touch Focus, Face And Smile Detection, Panorama, HDR | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama | Auto focus, Geo-tagging, Touch Focus, Face Detection, Simultaneous HD Video And Image Recording, HDR |
| Video | 2160p@30fps, 1080p@60fps, 720p@120fps | Yes, 720p@30fps | 1080p@30fps, 720p@60fps |
| Front Camera | 2.1 MP [Similar] | Yes, VGA [Similar] | 8 MP, 1080p [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 42 Mbps, HSUPA; LTE-A, Cat6, 300 Mbps DL, 50 Mbps UL | HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps | HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL |
| Bluetooth | v4.0, A2DP, EDR, LE | Yes, v4.0 with A2DP, LE | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot |
| USB | microUSB v2.0 | Yes, microUSB v2.0, USB Host | microUSB v2.0 |
| GPS | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS support and GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 32 GB, 2 GB RAM | 8 GB, 1 GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | No | microSD, up to 128 GB | microSD, up to 128 GB |
| USB OTG | - | 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 | Li-Ion Battery | Li-Po Battery | Non-removable Li-Po Battery |
| Capacity | 1860 mAh | 2100 mAh | 2600 mAh |
| Stand by | - | Up to 646 h (3G) | Up to 424 h (3G) |
| Talk Time | - | Up to 17 h 10 min (3G) | Up to 22 h 24 min (3G) |
