Phone Comparison - Samsung Galaxy S III I747 vs HTC Desire Z vs HTC Desire 820
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| Manufacturer | Samsung | HTC | HTC |
| Announced | June 2012 | September 2010 | September 2014 |
| Status | Available - July 2012 | Available - November 2010 | Coming Soon - September 2014 |
| Colors | Pebble blue, Marble white | Black | Marble White, Tuxedo Grey, Santorini White, Milky-way Grey, Tang |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
136.6 x 70.6 x 8.6 mm (5.38 x 2.78 x 0.34 in) |
119 x 60.4 x 14.2 mm (4.69 x 2.38 x 0.56 in) |
157.7 x 78.7 x 7.7 mm (6.21 x 3.1 x 0.3 in) |
| Weight | 134 g (4.73 oz) | 180 g (6.35 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 850 / 1900 / 2100 | HSDPA 900 / 2100 HSDPA 850 / 1900 - North America |
HSDPA 850 / 900 / 1900 / 2100 - EMEA version HSDPA 900 / 2100 - Asia version |
| 4G Network | LTE 700 MHz Class 17 / 2100 | - | 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, v4.0 (Ice Cream Sandwich) | Android OS, v2.2 (Froyo), upgradable to v2.3 (Gingerbread) | Android OS, v4.4.2 (KitKat) |
| Processor | Dual-core 1.5 GHz, Qualcomm MSM8960 Snapdragon | 800 MHz Scorpion, Qualcomm MSM7230 | Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 |
| GPU | Adreno 225 | Adreno 205 | Adreno 405 |
| RAM | 2 GB | 512 MB | 2 GB |
| Internal Memory | 16 GB storage | 1.5 GB; | 16 GB |
| External Memory | microSD, up to 64 GB | microSD, up to 32 GB | microSD, up to 128 GB |
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| Type | Super AMOLED capacitive touchscreen | S-LCD capacitive touchscreen | LCD Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.8 inches | 3.7 inches | 5.5 inches |
| Resolution | 720 x 1280 pixels (306 ppi) | 480 x 800 pixels (252 ppi) | 720 x 1280 pixels (267 ppi) |
| Screen-to-Body Ratio | 65.84% | 54.28% | 67.20% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | TBD | Stereo FM radio with RDS | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264x2448 pixels | 5 MP, 2592х1944 pixels | 13 MP, 4160 x 3120 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Simultaneous HD Video And Image Recording, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization | Auto focus, Geo-tagging, Face Detection | Auto focus, Geo-tagging, Touch Focus, Face Detection, Simultaneous HD Video And Image Recording, HDR |
| Video | Yes, 1080p@30fps | Yes, 720p | 1080p@30fps, 720p@60fps |
| Front Camera | Yes, 1.9 MP, 720p@30fps [Similar] | No [Similar] | 8 MP, 1080p [Similar] |
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| GPRS | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps | Class 32 | Yes |
| Edge | Class 12 | Class 32 | Yes |
| 3G | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE, Cat3, 50 Mbps UL, 100 Mbps DL | HSDPA, 14.4 Mbps; HSUPA, 5.76 Mbps | HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL |
| Bluetooth | Yes, v4.0 with A2DP, EDR | Yes v2.1 with A2DP | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, DLNA, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 (MHL), USB On-the-go | Yes, microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS support | Yes, with A-GPS, GLONASS |
| Browser | HTML, Adobe Flash | HTML, Adobe Flash | HTML5 |
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| Internal | 16 GB storage, 2 GB RAM | 1.5 GB; 512 MB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 64 GB | microSD, up to 32 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 | Standard battery, Li-Ion | Li-Ion Battery | Non-removable Li-Po Battery |
| Capacity | 2100 mAh | 1300 mAh | 2600 mAh |
| Stand by | Up to 300 h (3G) | Up to 430 h (2G) Up to 430 h (3G) |
Up to 424 h (3G) |
| Talk Time | Up to 8 h (2G) Up to 8 h (3G) |
Up to 9 h 50 min (2G) Up to 6 h 40 min (3G) |
Up to 22 h 24 min (3G) |
